Construction of original monastery building, Mount Wilson Observatory. The monastery served as a dormitory for visiting scientists. In the background, a large portion of the partially-constructed building is seen. The right-hand portion of the roof...
Horse-drawn truck on Mount Wilson trail near old blacksmith shop. Three unidentified men are with the horse and its vehicle; the man on the far left is wearing coveralls, and all three men are wearing hats. A portion of the blacksmith's work area...
Unidentified construction project on Mount Wilson. The ten (10) visible construction workers are also unidentified. Most of the men are carrying a very large wooden box or container; the rest of the men are standing by. Some of the men are wearing...
Unidentified construction workers, and project, on Mount Wilson. There are six (6) construction workers in the photograph, three of whom are clearly visible. The appear to be working alongside a mountain road.
Unidentified construction workers on Mount Wilson. Twelve (12) men posed for a group photograph; nine are standing and three are kneeling in front of them. One man, on the far right-hand side, is wearing coveralls. The construction workers are...
Asian construction workers widening the toll road below Pasadena Gap, Mount Wilson. Most of the men are wearing coveralls and all of them are wearing hats. Rockslides are in the area; shrubs are also seen.
Asian construction workers widening the Mount Wilson toll road. The rock face, a rock retaining wall and shrubs are all visible. Also shown is several men carrying large rocks with ropes tied around them, as a method of transportation.
Polar axle of the 60-inch telescope, Mount Wilson Observatory. The men pictured are Barnes, Ingram, & Bonham. Two of the three men are wearing coveralls, all three are wearing hats.
Two men with loaded 3-ton truck at the construction site for the 100-inch telescope, Mount Wilson Observatory. George Jones is on the left, facing away from the camera. The unidentified man on the right is wearing coveralls. Both men are wearing...
Construction of the foundation floor for large water reservoir, Mount Wilson. Four unidentified men are working within the reservoir site, one is wheeling a wheelbarrow, and another is smoothing freshly poured concrete with a tool. The wire mesh...
Construction of concrete foundation floor for water reservoir, Mount Wilson. Four unidentified construction workers are working within the reservoir construction site; one weilds a wheelbarrow while another uses a smoothing tool. The poured...
Testing 100-inch telescope floats at Fore River Shipyard, Quincy, Massachusetts. Three unidentified machinists are posed in and around the telescope floats; two are standing on wooden scaffolding.
Three (3) unidentified men with car and trailer, carrying a wooden pole, possibly a telephone pole. They are posed in front of the corrugated metal building that houses the 100-inch telescope, Mount Wilson Observatory. A large spool of wire is seen...
Lower section of the 100-inch telescope tube, mounted on a truck outside of Mount Wilson Observatory's offices, Pasadena. Five (5) unidentified men and a dog pose on and in front of the tube on the truck. One of the men seated in the truck is...
Lower section of the 100-inch telescope tube, on a truck, with a crowd, at Mount Wilson Observatory. The tube and truck are parked next to the 100-inch telescope observatory building; an open door in the side of the building is seen behind the...
50-foot interferometer mount, outside Mount Wilson Observatory's office in Pasadena. Two unidentified men stand on the ground next to the interferometer mount, a third is poised above the mount adjusting a tarpaulin. A small portion of the office...
A service truck of the Maddux company is parked in a large, high-ceilinged garage. There are several automobiles against the far wall being looked at by men in white coveralls. One such man is kneeling by the front passenger tire of the service...
Six men posing with the hoisting device used for removing the 100-inch mirror from its cell to be lowered onto the mirror, Mount Wilson Observatory. Left to right: Beebe, Dalton, Glenn, Moore, Nelson, and Pease. Mr. Glenn and Mr. nelson are...
Mr. Dalton and F.G. Pease standing next to the hoisting device holding the 100-inch telescope mirror, Mount Wilson Observatory. F.G. Pease stands at the far right, wearing s suit, coat and hat. Mr. Dalton leans over the mirror, and is wearing denim...
Eight men posed with the 100-inch mirror and its hoisting device resting on raised platform above silvering hole, Mount Wilson Observatory. Left to right: Hickox, Richardson, Glenn, Beebe, Moore, Dalton, Nelson, F.G. Pease. The interior of the...