Being a professional forester, I use aerials routinely. We've found MapCard to be a inexpensive way to acquire topo and fairly recent aerial photos. We used to buy expensive lots of aerials to use, but MapCard is a great deal better.
If you have Township, Range, Section or Lat. and Long., it's a piece of cake to find your area of interest and once there you can move around and print photos down to 1:6000. It cost less than $20 a year and if you have access to a color printer...good prints.
Laminate the sheets and you ready for bidness.