U.S. Geological Survey Illustrations
Panoramic view of the Grand Canyon, Sheet XV https://store.usgs.gov/product/114454
Panoramic view of the Grand Canyon, Sheet VI https://store.usgs.gov/product/114455
Published in "Atlas to Accompany the Monograph on the Tertiary History of the Grand Cañon District"
Atlas, online https://pubs.er.usgs.gov/publication/m2_1882
Atlas and USGS Monograph 2, Tertiary History of the Grand Cañon District https://pubs.er.usgs.gov/publication/m2
U.S. Geological Survey Sketches
Geological Survey Sketches https://library.usgs.gov/photo/#/?category1=sketches
Examples:
United States Geological and Geographical Survey of the Territories (Hayden). Looking into the Valley of the Cache la Poudre from behind the "Hog Backs." Colorado Territory, July, 1869. https://library.usgs.gov/photo/#/item/51dc4292e4b0f81004b7b0d3
