Frank Golden using the 60-inch mirror grinding machine at Hale Observatories' Pasadena machine shop. Golden is left of center, with his hands on a part of the grinding machine. The interior of the machine shop room is seen behind him.
Robert Stiles and the secondary mirror for the Palomar 60-inch telescope on small grinding machine at Hale Observatories' Pasadena machine shop. Stiles stands next to the grinding machine.
One drawing book/manufacturer's advertisement entitled The Singer Drawing Book for Young Artists, published by Singer Sewing Machine Co., ca. 1900. This promotional booklet contains 8 unnumbered pages of illustrations, each with its own sheet of...
This collection contains photographs of citrus orchards, citrus fruit (lemons and oranges), workers in the field, and citrus fairs. Several companies show up in the photographs including the California Fruit Growers Exchange, San Dimas Lemon...
Interior of Mount Wilson Observatory's machine shop, Pasadena, as seen from the north end of the room. Many machines and machine parts are visible in the room, some of which have pulleys suspended from the ceiling above them. The interior white...
Interior of Mount Wilson Observatory's machine shop, Pasadena, as seen from the northwest corner of the room. Many machines and machine parts are visible throughout the room; a workbench is seen at the far right below a bank of windows.
50-foot interferometer mount in front of Mount Wilson Observatory's machine shop, Pasadena. Three (3) unidentified mechanics are posed with the steel mount; two are standing on the ground next to the mount, and the third is seated above the mount....
50-foot interferometer mount in front of Mount Wilson Observatory's machine shop, Pasadena, with Pt. Loma eclipse cameras attached. The machine shop building is in the background, behind the steel mount.
Attaching the eclipse cameras onto the 50-foot interferometer mount at Mount Wilson Observatory's machine shop, Pasadena, for use at the 1923 Pt. Loma eclipse. Two (2) unidentified men are seen within the steel structure, attaching a camera to the...
Floyd Day polishing the Palomar 60-inch quartz disk at Hale Observatories' Pasadena machine shop. Day is seen at the far right, seated in a chair next to the polishing wheel. The polishing machine is above the disk.
Robert Stiles polishing the Palomar 60-inch quartz disk at Hale Observatories' Pasadena machine shop. Stiles is seen at the far right, with his hands on the disk. The polishing machine is above him.
Melvin Johnson working inside Mount Wilson Observatory's machine shop, Pasadena. Johnson is wearing a denim apron; the machine he is working on is seen in front of him.
An article is being printed out by an Associated Press teletype machine at the Los Angeles Times. A man's hand holds the article, which is about the President of the Philippines, above the typewriter portion of the machine. Everything but the...