IBT:
Yikes, our retreating stack takes some casualties. We kill a rifle outside of Washington, though.
Turn 4 -- 1828 AD
Fascism > Physics
Portland: Bank > Factory
Dammit, GW has Infantry. (This, btw, is why I didn't wait. Infantry is a huge advantage over Rifles and I wanted to make sure I got my money's worth).
Assault on Baltimore: Infantry defeats Rifle
Infantry kills retreated Cavalry outside Washington.
Our stack makes a diversion to kill the annoying cannon.
Washington is bombarded down to 40%.
IBT:
Our Chicago-area stack takes some more casualties, but our Washington stack kills a couple rifles.
Turn 5 -- 1830 AD
Satsuma: Factory > Coal Plant
Nara: Barracks > Factory
New Orleans: Harbor > Barracks
Cincy starts a Theatre
I rush an Ironclad in Miami to deal with an imminent Frigate threat.
We get a Great Engineer in Rome, I sleep him for now.
Assault on Baltimore: Infantry defeats Infantry, Baltimore is ours.
Rifle kills Cavalry threatening Miami.
IBT: Cannon assaults stack outside Washington, loses
Turn 6 -- 1832 AD
Miami's seas take some damage. Crap, GW has Destroyers.
Our ironclad sinks ignomiously into the sea
Outside Miami: Infantry defeats Grenadier.
Assault on Washington:
Cannon bombards to 0. 2 Cannons suicide.
Lose an Infantry, lose another. I send in Nine Lives ... who dies

But Nine Lives sacrifice will not be in vain, I pledge it!
Infantry defeats Infantry. Infantry defeats Rifle. Infantry defeats Rifle.
Infantry defeats Infantry. Infantry defeats Cannon. Infantry defeats Cavalry.
Washington falls. We now control the Parthenon, the Hagia Sophia, and the Statue of Liberty

... ooh, and an Academy.
Outside Washington, Infantry kills Rifle
IBT: We lose a Cavalry to an Infantry
Turn 7 -- 1834 AD
Antium: Pentagon > Infantry
Cumae: Coal Plant > Mt. Rushmore
Neapolis: Factory > Coal Plant
Tokyo: Ditto
Osaka: Ditto
Atlanta: Barracks > Factory
Boston: University > Oxford University
Outside Miami, Infantry defeats Cannon.
Outside Houston, Infantry defeats Infantry. Houston has just an infantry and a rifle guarding it.
War Weariness is starting to kick in.
Turn 8 -- 1836 AD
Physics > Combustion
Antium: Infantry > Infantry
Nottingham: Coal Plant > Bank
London: Coal Plant > Infantry
Edo: Coal Plant > Bank
Miami: Barracks > Forge
Dammit, all of our Uranium is in towns.
Actually, screw Combustion. I'm going for Artillery.
Philadelphia is guarded by Machine Gun, Cavalry, and Cannon.
IBT: Philly sacrifices one of its infantry to me
Turn 9 -- 1838 AD
Antium: Infantry > Cannon
Satsuma: Coal Plant > Cannon
New York: Bank > Factory
IBT: We lose an Infantry to an Infantry
Turn 10 -- 1840 AD
Antium: Cannon > Cannon
Cumae: Mount Rushmore > Cannon
Kyoto: Factory > Coal Plant
Assault on Houston:
1 Cannon suicides, 1 withdraws.
1 infantry dies, 2 infantry live, Houston is ours.
Well, I made some modest gains this turn. I should've started building extra cannons early, but I had thought I could research Artillery after Fascism (forgot about Physics). Oh well, still mostly a builder turn
I have a lot of Infantry stacks moving, but they need more cannon/artillery before they'll be able to take out Philly and Chicago. BTW, take a gander at Detroit:

... so we'll probably want a navy too.
Other than that, I think we're in good shape.
Results for this round:
4 cities taken, 1 razed.
And the save:
http://www.civfanatics.net/uploads11/VQ04_AD-1840.Civ4SavedGame