The University of Vermont maintains an excellent web site that includes a number of vintage images of the Vermont countryside. I check the site from time to time since they are obviously still adding digital versions of these old prints to the online collection.
This image dates to 1938 (there is also one available for 1940 - enter "Waterbury-aerial-1940" into the search window on the UVM site). Clicking on the photo should take you to the UVM web site where you can select the "Zoomify" tool - a little magnifying glass icon - and zoom in on different sections of the photos.
A few notes:
1. Starting at the station area, you can follow the mainline to the top of the photo. The way the track curves to the left is the inspiration for the way the mainline bends around the end of the peninsula on my layout.
2. You can clearly see the station area, with the feedmill, coal sheds, and a creamery just beyond the station.
3. There's a large industry across the tracks and just north of the station. I believe this might be the Pilgrim Plywood plant, but I'm not sure.
4. In the far distance (where the mainline curves to the left at the top of the image) you can make out the Demeritt Canning Co. to the left of the track. Derby & Ball is to the right.
5. The "Rock of Ages" shed would become the Cooley-Wright foundry during my modeled era.
And, if you're not particularly interested in Waterbury you'll find similar aerial views (and lots of views from ground level as well) of Essex Junction, White River Junction, Randolph, Burlington, etc...