Uaxactun, Guatemala : excavations of 1931-1937

Elements for the formulation of terms of reference / Manuel Varas S.

Early Americana : catalogue americana vetustissima / Alexander Baer

Cultural and historical geography of southwest Guatemala / Prepared in cooperation with the United States Department of State as a project of the Interdepartmental Committee on Scientific and Cultural Cooperation

Cruz das Almas, a Brazilian village / by Donald Pierson, with the assistance of Levi Cruz [and others]

Archaeopteryx lithographica : a study based upon the British Museum specimen / by Sir Gavin De Beer