Aerial survey project no. 86S-21 was flown on April 1 and April 10, 1986. These photos are a verbal scale of 1"=250'. The flight lines provide coverage for highway 169 from the junction with highway 60 southwest of Mankato to the junction with highway I-90 at Blue Earth. ASP No. 86S-21 includes index sheets 1, 2, and 3.
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