I perused the local history shelf at the library and found a fantastic, and very large, book about Washington DC. I've been struggling to find the kind of information I need--where might people have lived, where might they have shopped, what they might have seen (aside from the obvious stuff I know about, like the uncompleted Washington Memorial). This book had tons of helpful pictures and maps. I loved it.
I got really excited . . .
ETA: This is my post #1000! Sweet.