Petty cash books relating to Muintir na Tíre, details date, amount, items bought and balance in hand

Photograph album documenting various irrigation projects that M M O'Shaughnessy was involved with or interested in. The first is a dam project on the Otay Lake, and the photographs show the laying of pipelines, construction of the dam, the construction of Lower Otay House, construction workers, and the industrialist Captain Charles T Hinde on site.

The album also includes photographs from earlier that decade taken during the Koolau Ditch project in Maui, Hawaii, with a memorial stone to O'Shaughnessy, the Engineer, 1904. Ed. Rogers and Jorgen Jorgensen (who was known as 'Little Boss' on site) are photographed with him.

There are photographs of bridges and canal structures from a trip to China, including the entrance to the city of Kading, and Shanghai. Photographs of railway lines and irrigation projects in Mexico also demonstrate O'Shaughnessy's interest in learning from irrigation projects elsewhere.

Several photographs in the album document his project at the Dulzura Conduit, San Diego. These images also include several candid photographs of the construction workers at the Cottonwood camp.

Photograph of the Mill Valley High School, and some images of the O'Shaughnessy family dated 1908-1909.

Several photographs of the Morena Reservoir documenting the dam project O'Shaughnessy led from 1909-1910.

The final few pages of the album show the construction of the Los Angeles aqueduct, with Chief Engineer William Mulholland and his guests photographed in a group.

All of the photographs in the album have been captioned by O'Shaughnessy. They are in no discernable order with several projects and subjects intermixed.

Black and white photograph of M M O'Shaughnessy and a group of 12 other men at the dedication of the Pittman plaque at the O'Shaughnessy dam.

Black and white group photograph captioned Bayshore Boulevard, Visitacion Valley. It shows a large crowd spectating, with a marching band setting up their instruments in the background.

Black and white photograph of 6 men, named from left to right as: Vincent, [Molony], McAfee, Ryder, M M O'Shaughnessy and [Carmody].

Two copies of a black and white photograph of M M O'Shaughnessy with another man, unidentified. Both are smiling. O'Shaughnessy is carrying a newspaper.

Black and white photograph of M M O'Shaughnessy (left) and Senator Pittman (right) at the dedication of the Pittman Plaque, at the O'Shaughnessy dam.

Black and white photograph of M M O'Shaughnessy (right) with Mayor Sunny Jim Rolph (middle), and an unidentified man to the left of the photograph. They appear to be standing on a playing ground, with an audience on a stand behind them.

Black and white photograph of M M O'Shaughnessy (middle) and two unidentified men on site.

Black and white photograph of a man holding a glass bottle and smiling.