1939-40 CHY (Arizona Strip and Kanab Creek Area, Arizona)
The 1939-40 CHY (Arizona Strip and Kanab Creek Area, Arizona) vertical, black and white (panchromatic) aerial project was acquired by the Soil Conservation Service (SCS), now the Natural Resources Conservation Service (NRCS), at a scale of 1:20,000 (1 inch equals 1667 feet), covers part of Arizona and Utah, and consists of 14 index sheets.