Get your textures from where you can!

Not every object you want to model is easy to get texture references from. Im currently working on a model of pittsburgh, and im trying to get textures, which is often easier said then done. so im making do with what i can get. here are some examples of what im starting with and what im getting out of it. using good old fashioned photoshop and guides.

here is an example of my original photo. there is a work trailer to my left which doesnt allow me to get a straight on photo:

And here is what i was able to pull off the photo, straiten up, skew, and paint.