JACKSON, William Henry. "Packing the Load." Denver, CO. From the Colorado Series. A view of one of William Henry Jackson’s pack mules carrying his camera equipment.

O'SULLIVAN, Timothy. "Characteristic ruin of the Pueblo San Juan, New Mexico, on the north bank of the San Juan River." 2 of the same stereoview from the Wheeler Expedition of 1874, under 1st Lieut. Geo. M. Wheeler: Timothy O'Sullivan is shown with one of his large single lens large format cameras. Next to him is an Indian scout. 

[With:] PURVIANCE, W. T. "Ausable Chasm—Anvil Rock." From "The Picturesque of the Adirondacks" series. Just visible to the right side of the image is a camera with the photographer seated next to it, crossing his legs and wearing a wide-brimmed hat. A rock formation shaped like an anvil is presented in the left foreground.