The USGS has posted a scanned file of John P. Snyder’s 1987 “Map Projections: A Working Manual” online in PDF and DjVu format. The beginning of the book contains substantial introductory information about map projection families and distortions. Each projection is started with a useful summary of the context and usage of that particular projection. Snyder then delves into detail about the history, features, and usage before providing the mathematical formulas used to calculate the projection.
A list of the projections reviewed is below after the book image.
Projections listed in the manual:
Albers Equal Area Conic
Lambert Conformal Conic
Bipolar Oblique Conic Conformal
General Perspective (vertical and tilted)
Lambert Azimuthal Equal-Area
Space Map Projections:
Space Oblique Mercator
Pseudocylindrical and miscellaneous map projections:
Van der Grinten
Eckert IV and VI