Self-Portrait of Photographer O. M. Perrigo Posing With His Horse-Drawn Photography Wagon With Darkroom Attached to the Back in Medfield, Massachusetts (1860s)

Probable self-portrait of photographer O. M. Perrigo posing with his horse-drawn photography wagon with darkroom attached to the back. The subject appears to be holding a string which would have been attached to the camera lens cover, allowing him to take a self-portrait. Perrigo seems to have taken this stereoview photograph (cropped and edited for clarity) after taking more than two dozen stereoviews of buildings, machinery and employees at the Excelsior Straw Works in Medfield, Massachusetts, sometime during the late 1860s.

Source: New York Public Library.

View of Egbert Guy Fowx or an Assistant Developing a Photograph in a Mobile Darkroom in Richmond, Virginia (1865)

View of Egbert Guy Fowx or an assistant developing a photograph in a mobile darkroom with a pontoon bridge and downtown Richmond in the background in Richmond, Virginia, c. 1865.

Source.

Three Men Posing With Two Mortars in the Trapier Mortar Battery on Morris Island Shortly After the Surrender of the Nearby Fort Sumter by Union Forces in Charleston Harbor (1861)

Three men posing with two mortars in the Trapier Mortar Battery on Morris Island shortly after the surrender of the nearby Fort Sumter by Union forces in Charleston Harbor, 1861. The battery fired its mortars at Fort Sumter in the bombardment leading to its surrender. The darkroom used by the photographers to develop this photograph is visible behind the mortar in the background. By Osborn and Durbec. From The Blue and Gray in Black and White: A History of Civil War Photography.

US Navy Blacksmiths at Work on the Deck of the Union Monitor USS Lehigh During the Civil War

US Navy blacksmiths at work on the deck of the Union monitor USS Lehigh during the Civil War. The darkroom where this photographs were probably developed and a box of equipment with the name of photographer Egbert Guy Fowx on it, who probably took this photo, are visible on deck on the right behind the ironworking operation. Animated stereoscopic photographs.

Source.

Photographers Relaxing in a Union Camp During the Siege of Petersburg

Photographers relaxing in a Union camp during the Siege of Petersburg. The mobile darkroom where these negatives were developed is visible behind the tent. By Timothy O'Sullivan. Animated stereoscopic photographs.

Source.

A Group of Men Posing Around a Well Near an Abandoned Confederate Field Hospital in Cedar Mountain, Virginia (1862)

A group of men posing around a well at the site of an abandoned Confederate field hospital after the Battle of Cedar Mountain, Virginia, August 1862. By Timothy O'Sullivan. Animated stereoscopic photographs.

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Union Soldiers Posing on and in Front of a Signal Tower at Bermuda Hundred, Virginia (1864)

Union soldiers posing on and in front of a signal tower at Bermuda Hundred, Virginia, 1864. Another man, probably a photographer, is posing with a darkroom wagon on the right. Animated stereoscopic photographs.

Source.

A Man Posing With One of Mathew Brady's Photography Wagons During the Civil War

An unidentified man posing with one of Mathew Brady's photography wagons during the Civil War. Animated stereoscopic photographs.

Source.