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Remember: 770 is the Magical Number for Photography at Public Libraries



Have an afternoon to kill at a public library and want to go directly to the photography section? Just remember the magical number 770.

That’s the division number for “Photography & computer art” in the Dewey Decimal System, used in hundreds of thousands of public libraries in 135+ countries around the world.


The books in the division will be grouped together, but additional sections break down the subject even further:

771 will be about techniques, equipment, and materials related to photography. 772 and 773 will give you information on the metallic salt and pigment print processes.

If you’re a digital shooter, 775 is the section you’ll want to check out. 778 will be books about various genres of photography.

Finally, if you want to kick back and enjoy photographs from contemporary and historical photographers, grab a book from section 779, labeled “Photographs.”

P.S. If you want to enjoy a library’s photography resources without leaving the comfort of your home, you can pay a visit to the Library of Congress’ Prints & Photographs Online Catalog.

Update: It seems Photojojo shared this exact thing earlier this month. They go a little more in depth on this.

Image credits: Library of Congress Reading Room Open House 15 by tedeytan, Library books by CCAC North Library