Here's my log. I posted a small one already, so there may be some repetition.
-4000: Am playing standard ICS for a while, trying to build a good base. Based on a little black-clicking, I'll aim to grow towards the SW if possible, for some early ports, and access to the South [this was before I learned of the Sioux to the NW, of course]. Taxes at 60, for RBs, for more settlers. Actually, I kept taxes near the max for most of the game.
-3050: Monarchy [both the adv and govt] Taxes to 70.
-2000: 9 cities, 2 settlers, 6 roaded tiles, 6adv, have raised Science to 70 temporarily, trying to reach Trade ASAP. With Trade, I can look for a city that supplies Hides, for a possible SSC/STC. I want a few warriors for huts, a few ports, more ICS [until van trade can take off], probably will need HG soon, probably can get pottery thru MPE].
-1900: 1st hut = chariot.
-1850: 2nd hut = horseback riding. I guess this is average or slightly bad hut luck, so far. The 3rd thru 5th were 2 legions and a barb horse, and the rest were pretty average IIRC.
-1750: Trade. 12 cities, one with Hides.
-1500: MapM, 15 cities, 2 vans, 9 adv
-1400: Meet Russian legion, get Mys for MapM and agree to peace [I have no real army].
-1350: MPE. Get pots, poly [and masonry, I think] and all maps within a few turns. LBH [Sioux] demands Hides, and I have ports on that sea, so they'll be my first trading partners. Probably Zulu's next.
-1000: Monarchy. Still 15 cities [see -1500] with 0S, 10w, 3tri, 4v, 13adv, 1 WoW. I've got 2 loaded boats heading to the Sioux, expecting 3 deliveries soon, hoping for maybe 500g [actually was 80+112+152=344g]. Taxes = 70% = 24g/t. Sci = 30% = 8b/t. No city improvements.
I have temporarily stalled ICS, while building MPE and getting some trade started, which should give even better growth than more settlers. But in hindsight, the first bonuses were disappointing and I could've ICSed a bit longer.
-975 and -950: Russians pay tribute, 75g and 50g. I find that I can't celebrate until HG.
-900: Van 1 = 80 [short dist, no cele] but that's still enough to get Writing.
-825: HG and my cities can celebrate.
-800: Vans 2 and 3 pay 112 and 152, enough for Seafaring [Van 4 was not demanded, probably an accident, and pays only 84g].
-750: Van 5, Hides from Lake Cempoala [size 2 or 3?] pays 184g, gives Lit. I decided about this time that L.C. will be my SSC/STC, at <49,49>. But it is not a priority in my game plan [big trade] and I don't develope it fully. I was probably [can't recall for sure] already disbanding warriors into LC each turn to RB Hides vans, and didn't want to lose a turn there for anything else.
-675: War with Russians. 3 more vans have come in; 112g and 136g and 64g [low because of a demand change at the last minute].
-650: Ru defeats a settler. Van 8 = 184g
-625: Change to Republic. Van 9 = 184 [these larger bonuses are probably all from LC Hides]. Phil->Mono->Constrn.
-600: 3 vans pay 128, 180, 176.
-575: Van 13 = 150, Cons -> math. Lux = 80 temporarily to cele-grow 7 cities from size 3 to 4 [80 sounds too high, but that's what my notes say].
-550: Get math from Sioux. I didn't really plan to get techs from the AI, but did it sometimes. Also, I gave a few techs to the Sioux, probably about 10 total, from about -800 to about 1AD. I hadn't sorted out the best policy on that yet, but in hindsight should've done it more. Now have 5 size 5 cities. Vans 14 and 15 pay 232 and 144.
I plan to build roads near my "big" cities for more arrows, maybe switch back to Monarchy [didn't], build Col before the Viks finish [did]. I raise taxes back to 60, because it seems I need Mike's to continue cele-growth [some rules-of-thumb on this would be very helpful].
-525: Vans 16 and 17 pay 232 and 128. Senate signs cease fire with Ru's.
-500: Astro -> Med. Vans 18 and 19 pay 232 and 128 [probably from the same cities as last turn].
Stats: Republic. 23 cities, Mfg 78, Taxes = 78g/t [with 3 riots], 6S, 10tri, 15v [but 4v intended for Pyr], 23 adv, 2WoWs.
Notice that van trade is making a profit over 100g/t, which has helped me resume ICS, build 3 WoWs soon, and build a decent ship chain. It is also giving me an advance approx every 2 turns. Ideally, my plan is to double that every 15 turns or so, but Civ2 has built-in trade penalties/etc to prevent that. Even so, this system will gradually improve itself until [approx 200AD] it gets an advance every turn, without much help from scientists.
-475: Pyr. Ooops .. no van this turn.
-450: Vans 20,21 pay 232, 168.
-425: Med-> Uni. Vans pay 152,152 and 232.
-400: Vans pay 176, 168
-375: Uni->Bank, Vans = 192, 240. Lost a trireme at sea [careless]
-350: LH. Vs = 240, 184. I am not sure about my choice of WoWs in this phase [maybe Mike's and Col and Cope's were better than Pyr and LH?]. Plan to open trade with Pers + Zulu soon, to double/triple my profits.
-325: Bank -> Econ [I may stop recording all the techs and vans here ... just key ones and totals]. Vs = 230, 184, 160. I guess I'm averaging 2 vans per turn and an advance every 2 turns from that.
-250: "Vikings almost finished Colossus".
-225: Colossus [I was rather lucky to be ready to build it just before the Vikings]. I got Wheel from the Zulu and a 336g van, my first over 300.
-200: LC has grown to size 7. A 360g van [and a 184g]. Taxes at 60, Lux at 40. 30 cities, Mfg 108, 30 adv, 12S, 15v, 14tri [approx 4tri in South now, I think].
-150: Lost a loaded boat because of Russians [I forget exactly how - maybe displaced workers, loss of support?].
-100: Ru's sneak, raze a city, a supported boat, passengers ... Aargh.
-75: A van from LC to Zulus pays 432. My vet trireme loses to a Russian trireme.
-25: Lost another city to Ru's, and supported crusader + legion. They also have made a small invasion northwards, near <51,57>. I keep underestimating them. Peace with the other 5 AI.
Some good vans bring my treasury over 1000g, which I try to spend ASAP, of course.
1AD: 37 cities, 8S, 23tri, 28v, taxes @60% = 161g/t, Sci @0 = 9b [scientists], Lux = 40%. 34adv. I have delivered a total of 61 vans. Have a good ship chain with outposts to the Zulus.
LC (my weak STC) is size 7 and celebrating. It has a market and Col. No library/etc. It is making Hides every turn, and is supporting 6 vans. It has 3 irrigated tiles nearby and about 9 road tiles [and a gems special].
+20: Zulus sneak and destroy a van, Russians a crusader. Invention -> Nav, hurts trade. This was a pretty dismal period, though I think I still got an advance every 2 turns, approx.
+40: Hidden Ru ellie destroys a van. Zulus destroy a van and a settler. I manage to get some Hides vans past the Russians into Persia, to discover that they don't want Hides anymore. They return.
+60: Vikings build GW. "Persians start Cope's". About 3 or 4 vans per turn now, averaging about 150g.
+80: Mikes allows cele's again.
+100: LC is size 10.
+120: "Persians near Cope's". Ouch! How did they do that so fast ??? I think they were building some other WoW and switched. Anyway, I wasn't ready to compete, and had to give up on the idea of an SSC. Dismalness goes on.
+140: Ps build Cope's. I build Leo's [my vans could've built Cope's, but not in any city that could serve as an SSC].
+160: Ru ellie defeats a S in a fortress.
+180: LC is size 13.
+200: RR-> Indn (no more HG). I'm averaging about 5 vans per turn now, and am around 1 adv per turn now (including Darwin).
+240: Darwin. Mag ->Corp ->Explo. 43 adv's [9 adv's in the last 12 turns]. This turn had about 7 vans totalling about 1500g.
+260: Captured Moscow. Russians weakened now. Using TLS = 30,30,40 now [approx]. Sci = 30 is usually enough for 1 adv per turn. IIRC my best city, LC, provides about 15% to 20% of my city beakers, roughly 5% of all my beakers. So, it is not a major factor, except that it is still giving me good bonuses.
+320: Shakes in LC.
+340: 47 adv
+380: Theo -> Conscn. I thought Theo would enhance Mike's, but no. So, this off-path tech was a waste. I probably should've built JSB, but delayed until almost the end of the game. I ccouldn't find any info about JSB and celebration ... wasn't sure it would help [but now I think it does].
Am delivering approx 10 vans per turn now, to keep 1 adv / turn. Profits per van are way down.
+420: LC is size 17, but can't make more Hides. This is very bad news, though I was surprised Hides lasted this long. I do have 47 vans total, to carry me for a while, but need a plan. I decide to expand (ICS) into the SE, past the Russians, to create more cities, more supply. Am starting to worry [too much] about the trade penalty from Flight. I think Elephant has it wrong in his Tips post.
The rest is not very interesting, but I will provide stats, answers, etc about it upon request. I deliver 10 vans per turn, for about 2500g and 2500b total, and get an advance per turn until done, about 900AD. Scared of Flight, I built about 30 libraries/etc, hoping to go on with cities instead of trade, if necessary. These were probably a waste of gold. I did build a dozen cities south of Russia [Bulgaria] plus RRs, which helped with trade. I never switched to Demo, because I saw no reason for it. Probably I could've gotten 2 adv per turn a few times, though, so this was a minor error. I built RRs thru the Russians and Zulus and Persians, for better trade, but mostly ignored the Vikings and Carths. After the Hides era, I traded Dye(etc) with the Sioux from my southern cities. They didn't change demand much in the late game, so they were a reliable trade target. Actually, I usually had some small cities making Hides almost until the end, but they didn't help like the STC Hides vans did.
+440: CfC
+480: Zulus build STWA. Chiv -> Lead [I postponed these techs til after Inv/Nav/etc .. not sure of the best policy on that].
+500AD: Republic. About 55 cities, 20Eng, 30trans, 35freight. 55adv. Curious, that my number of advances matched my number of cities pretty well through the whole game. Taxes @50% = 483g/t cost = 38g/t. Sci @10% = 94b/t, Mfg = 235. Popn 11M.
LC is size 21, and gets 74 arrows, 23 of those from ongoing routes. With a market, etc, it makes 86g in taxes, 15 beakers, and is celebrating at 40% lux. It still has 3 unblocked supplies [Dye, Gold, Gems] so it is still making vans. No university yet.
My typical older city is about size 8, and has 2 or 3 supplies either blocked or not in demand [so a few are still making trade vans, but most are not]. Ongoing routes seem to give about 1/3 of the total arrows for the city. My newer smaller cities often have 3 unblocked supplies, with roughly half of those in demand by some AI city. These new cities are certainly worthwhile, and I wish I'd made more earlier (but am not sure what I'd have given up).
+560: Mags
+580: Persians steal a tech, I declare war, and take Persepolis and Cope's. But I can't quite make the city into an SSC.
+660: Zulus steal ... war ... I take Zimbabwe. I only have about 10 Cavalry for all the AI, but have enough transports and RRs to move them around at will.
+740: INC in LC. This may seem late for INC, but I have had science set pretty low, and LC is not providing a huge number of beakers even with science at 30 or so.
+780: Flight. Not as bad as expected.
+800: SETI. Now, I could almost get 1adv/t from my cities with Science at 80 [or 100 in Demo]. But I kept trade going for the gold.
+860: Carths pay for a sneak, are destroyed.
+880: Ru's destroyed. Space Flight -> Plastics.
+900: Apollo Program [I almost forgot I had to build this]
+940: SuperC -> FusPow.
+980: Launched a 37.16.3 ship. It was supposed to be a 33.16.3, but I miscounted structurals! Also, I thought at first the ship needed 6 modules, and had 5 approx ready before I "woke up". Fortunately, I could still switch 2 to WoWs. I guess I was pretty tired by then.
+982: Adam S
+983: JSB
+984: Zulus down, I get the GL.
+985: End
My overall feeling was that Big Trade worked out pretty well, despite my many mistakes. The map was pretty good for Hides, but it seemed to lack an ideal trading partner, which made my plan difficult. So, I think Big Trade should do better than this on most large maps, but I am not sure how it would do without Hides. I think Big Trade and ICS go together in EL, and I probably should've ICSed a little more consistently.