http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Weekly (June - Aug.) and monthly (Sept.-Dec.), 1923
Monthly (weekly during the summer months), 1924-1925
Some issues also have a distinctive title.
Select issues and articles also available online.
The Al Stonestreet Parks and Recreation Collection, 1997.
Published cooperatively by the U.S. National Park Service, Yosemite Naturalist Dept. (and from Feb. 1948-1960, under its later name: Yosemite Naturalist Division), and Yosemite Natural History Association (varies slightly).