• 6 DVDs

• 2 Design and construction
• 2 Hale, George Ellery, 1868-1938
• 2 Mount Wilson and Palomar Observatories
• 2 Reflecting telescopes
• 2 Telescopes
• 1 Air conditioning
• 1 Astronomical observatories
• 1 Astronomy
• 1 Copernicus, Nicolaus, 1473-1543
• 1 Cosmology
• 1 Discoveries in science
• 1 Diseases
• 1 Electric lighting
• 1 Galilei, Galileo, 1564-1642
• 1 Glass
• 1 Global warming
• 1 History, 19th Century
• 1 History, 20th Century
• 1 Hubble Space Telescope (Spacecraft)
• 1 Human beings
• 1 Inventions
• 1 Inventors
• 1 Lungs
• 1 Maintenance and repair

• 4 Public Broadcasting Service (U.S.)
• 2 LaMarche, Maurice, 1958-
• 2 Mason, Robin
• 2 Mason, Todd
• 2 WGBH (Television station : Boston, Mass.)
• 2 Wolfinger, Kirk
• 1 American Experience Films
• 1 Arrow International Media
• 1 Ashcroft, Nigel
• 1 Axelrod, David, 1955-
• 1 Barrett, Andrea
• 1 British Broadcasting Corporation
• 1 Cafarella, Kristina
• 1 Cooper, Andrea, 1952-
• 1 Curtis, Joanne
• 1 Davies, Sherwood
• 1 DeNooyer, Rushmore
• 1 Ferris, Timothy
• 1 Gazit, Chana
• 1 Gibbon, Johanna Woolford
• 1 Goldsmith, Donald
• 1 Harding, Ben (Benjamin William)
• 1 Hochman, Gary
• 1 Hotaling, Mary

• 2 California
• 2 Palomar, Mount
• 1 Antarctic Ocean
• 1 Antarctica
• 1 United States

• 6 Documentary television programs
• 6 Nonfiction television programs
• 6 Video recordings for the hearing impaired
• 1 Educational television programs
• 1 Feature films
• 1 Historical television programs
• 1 Television adaptations
• 1 Video recordings for people with visual disabilities

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