Nature Study Guild Publishers

year of pub­li­ca­ti­onISBNauthor(s)title
1955978-0-912550-00-8May Theilgaard WattsFlower Finder: A Guide to the Identification of Spring Wild Flowers and Flower Families East of the Rockies and North of the Smokies, Exclusive of Trees and Shrubs (Nature Study Guides)
1991978-0-912550-01-5May Theilgaard WattsTree Finder: A Manual for Identification of Trees by their Leaves (Eastern US) (Nature Study Guides)
1978978-0-912550-02-2Glenn KeatorPacific Coast Berry Finder: A Pocket Manual for Identifying Native Plants with Fleshy Fruits (Nature Study Guides)
1970978-0-912550-03-9May T. Watts · Tom WattsWinter Tree Finder: A Manual for Identifying Deciduous Trees in Winter (Eastern US) (Nature Study Guides)
1977978-0-912550-04-6Roger J. LedererPacific Coast Bird Finder: A Pocket Guide to Some Frequently Seen Birds (Nature Study Guides)
1972978-0-912550-05-3Tom WattsRocky Mountain Tree Finder a Manual for Identifying Rocky Mountain Trees
1974978-0-912550-07-7May Theilgaard WattsDesert Tree Finder: a pocket manual for identifying desert trees (Nature Study Guides)
1981978-0-912550-10-7Ron Russo · Pam OlhausenPacific Intertidal Life: A Guide to Organisms of Rocky Reefs and Tide Pools of the Pacific Coast
  ''978-0-912550-12-1Dorcas S. MillerTrack Finder: A Guide to Mammal Tracks of Eastern North America (Nature Study Guides)
  ''978-0-912550-13-8Glenn KeatorPacific Coast Fern Finder (Nature Study Guides)
1987978-0-912550-15-2Cherie Hunter DayLife on Intertidal Rocks: A Guide to the Marine Life of the Rocky North Atlantic Coast (Nature Study Guides)
  ''978-0-912550-16-9Ron RussoPacific Coast Mammals: A Guide to Mammals of the Pacific Coast States, Their Tracks, Skulls and Other Signs (Nature Study Guides)
1989978-0-912550-17-6Dorcas S. MillerWinter Weed Finder: A Guide to Dry Plants in Winter (Nature Study Guides)
1990978-0-912550-18-3Roger J. LedererBird Finder: A Guide to the Common Birds of Eastern North America (Nature Study Guides)
  ''978-0-912550-20-6Ph.D. Janet L. WingateRocky Mountain Flower Finder: A Guide to the Wildflowers Found Below Tree Line in the Rocky Mountains (Nature Study Guides)
1991978-0-912550-21-3Ron RussoMountain State Mammals: A Guide to Mammals of the Rocky Mountain Region (Nature Study Guides)
1986978-0-912550-22-0Dorcas S. MillerBerry Finder: A Guide to Native Plants with Fleshy Fruits
1999978-0-912550-23-7May Theilgaard WattsReading the Landscape of America
2001978-0-912550-24-4Barbara HallowellFern Finder: A Guide to Native Ferns of Central and Northeastern United States and Eastern Canada (Nature Study Guides)
2002978-0-912550-25-1Phoebe WattsRedwood Region Flower Finder
2005978-0-912550-26-8Dorcas S. MillerConstellation Finder: A guide to patterns in the night sky with star stories from around the world
2004978-0-912550-27-5Tom WattsPacific Coast Tree Finder: A Pocket Manual for Identifying Pacific Coast Trees (Finders)
2008978-0-912550-29-9Tom Watts · Bridget WattsRocky Mountain Tree Finder