"The Northern California Atlas and Gazetteer" includes 104 quadrangular maps covering the northern portion of the state. The scale of the maps is 1:150,000 (one unit of measure on the maps represents 150,000 units of the same measure on the ground). Each map page is composed of 26.25 minutes of longitude and 30 minutes of latitude, covering an area approximately 23.4 miles (37.7 km) wide by 34.5 miles (55.5 km) high. To create a wall map of northern California, join the 104 maps together using two atlases. The resulting mosaic will measure approximately 12 feet high by 13 feet wide. The Northern California Atlas and Gazetteer includes: Detailed Topographic Maps *Outdoor Recreation *Places to Go, Things to Do *All-purpose Reference *Back Roads *Recreation Sites *GPS GridsDelorme is the author of 'Northern California Atlas & Gazetteer', published 2000 under ISBN 9780899332871 and ISBN 0899332870.