Hi - some more information you asked for on the Calgary images:

Air Photo #021, Roll/Negative 02/23:
Prominent Street running horizontally (with the wide grassy areas around it) is McKnight Blvd NE, and the community in the immediate foreground is caled Coral Springs.

Air photos #017, 018, 019, and 020 are all of Saddle Ridge, a new community in the extreme Northeast of the city (near the location of the new ring road). Falconridge Blvd is seen extending off to the left (making the S-curve near the left side of the image, halfway up), and Barlow Trailis seen in the background running past the airport field. Other than those, there aren't really any major roads to use here.

Air photo #016 is in the same general area, but focuses on Taradale. Coral Springs is clipped on the left side of the image.

Thanks,
- Peter