Spring Wildflowers of the San Francisco Bay Region, 1970 Vintage Field Guide Klondike Gold Rush This lovely book set is

This lovely book set is a mix of titles from the International Library of Technology correspondence course from the 1927

The book explains how solar heating works

The collection includes works by well-known authors such as Oscar Wilde

The format is straightforward and instructional

Spring Wildflowers of the San Francisco Bay Region, 1970 Vintage Field Guide Klondike Gold Rush This lovely book set isThis is a vintage printing of Spring Wildflowers of the San Francisco Bay Region by Helen K. Sharsmith. Part of a series called California Natural History Guides. Mostly B&W illustrations with a section of color photographs in the middle. This paperback is in good condition.