Aerial Photography - USDA
http://www.lmic.state.mn.us/chouse/airphoto_usda.html

Land Management Information Center, State of Minnesota


This site from the Minnesota Land Management Information Center provides a collection of aerial photographs from agencies within the U.S. Department of Agriculture. These photographs date from the mid-1930s to the present. Information and links related to these agencies are provided.

This resource is referenced here:
Subject: Geoscience:Geology
Resource Type: Scientific Resources:Collection, Audio/Visual:Images/Illustrations
Topics: Earth surface