Volume 1
Alaska: Prince William Sound
Volume 1
Alameda, Contra Costa, Marin, Solano, and Sonoma Counties, California
Volume 1
Humboldt County, Nevada
Volume 1
Independence Lake, Nevada County, California
Volume 1
Alameda, Marin, Solano, Contra Costa, and Monterey Counties, California
Volume 1
Vancouver Island, British Columbia
Volume 1
Nevada and El Dorado Counties, California
Volume 1
Solano and Alameda Counties, California
Volume 1
Trinity and Shasta Counties, California
Volume 1
Bolinas, Marin County, California
Volume 2
Tehama and Colusa Counties, California
Volume 2
Siskiyou and Trinity Counties, California
Volume 2
Fresno County, California; Crater Lake, Oregon; Zuni Wells, Arizona
Volume 2
Nevada
Volume 2
Utah
Volume 3
Nevada, Utah, Idaho, Oregon, Washington, and British Columbia
Volume 3
Arizona, New Mexico, Texas, Utah
Volume 3
Arizona, New Mexico, Utah
Volume 4
California, Arizona, Utah, Colorado, New Mexico
Volume 4
California and Arizona