63 pp. With folding map frontispiece of the Central Irrigation District, and 1 photograph plate of a dredger. 9¾x6, original brown wrappers printed in black. With slip advertising where to obtain additional copies tipped in at title page, also an errata slip tipped in at page 44.

With a great "Map Showing Location and Extent of the Central Irrigation District and Main Canal. Colusa and Glenn Counties, California." With bookplate of Joseph M. Gleason on verso of front wrapper.