INTRODUCTION 
The activities of upwards of half a century, 
mainly in Government service, are recorded in a multi- 
tude of publications of the Hayden Survey of the Terri- 
tories, the Smithsonian Institution, the National Museum, 
the Bureau of American Ethnology and the National Gallery 
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of Art, beginning with 1871 and ending with 1928, and to 
some extent in the publications of the Pan American Union 
and the Interior and State Departments. 
Unofficial records occur in numerous scientific 
and art journals including Science, the American Anthro- 
pologist, Art and Archeology and the American Magazine of 
Art. Also in the Field Columbian Museum Reports for 1894 
and 1896, including especially the volume on the Ancient 
Ruins of Yucatan, 1895 and in reports of the Department 
of Geology of the University of Chicago. See also the 
bibliography appended to this volume. 
Attention was not given to the writing of a formal 
personal biography until I was in my 83rd year, and all 
that could be done was to assemble and bind in volumes such 
selections from the great mass of refuse of a life time, 
scientific, artistic and personal, as might possibly prove 
