One 'Munsell Soil Colour Chart' with Birdsell's annotations, and one Skin Colour Chart based on Albert Munsell's colour categorisation. These items were used during the Harvard and Adelaide Universities expedition 1938-1939, and the University of California Los Angeles expedition 1952-1954.

Also enclosed is a review, Pendleton, RL and Nickerson, D 1951, 'Soil Colors and Special Munsell Soil Colour Charts', Soil Science, 71:1, January 1951, pp.35-43., and one instruction manual (5pp.)