Engineer Manuals.
Soil Dynamics and Special Design Aspects, 15 November 1997 (157 pages)
Soil Mechanics, 01 Sept. 1986 (388 pages)
Foundations and Earth Structures, 01 Sept. 1986 (279 pages)
Engineering Procedures for Foundation Design of Buildings and Structures U.S. Army Corps of Engineers
Manual on Subsurface Investigations National Highway Institute Publication No. FHWA NHI-01-031 Geotechnical Site Characterization July 2001
The Manual is devoted to the analysis of trench and excavation earth support (shoring) systems and retaining walls.
A comprehensive geotechnical reference manual geared towards transportation applications but relevant to all aspects of geotechnical engineering.
Geotechnical Info .Com has several publications, free by downloading from the links in the site or many more publications are referenced as well.
List of Publications available at geotechnicaldirectory.com