PREFACE 
In the spring of 1913, at the suggestion of Dr. Edgar L. Hewett, 
director of the School of American Archeology, the Board of Re- 
gents of the University of Colorado placed in my hands the means 
with which to conduct excavations among the ruins in the region be- 
tween the Mancos and La Plata Rivers. The permit from the Sec- 
retary of the Interior was obtained through the School of American 
Archeology, hence the work during the summer of 1913 is officially 
recorded as having been done in collaboration with that institution.* 
As a result of the first season’s explorations, I was sent back to 
the same field, where I conducted excavations during part of the 
summer of 1914. In this research the School of American Archvol- 
ogy did not collaborate. 
Because of limited means, the explorations were not so thorough 
nor so extended as it would be desirable to have made them. Time 
could not be spared to draw plans of all the ruins visited, and those 
which are given are compiled from measurements taken with a tape- 
line. In many places it has been necessary to use the terms “ about,” 
“roughly,” and “approximately ” where exact determinations could 
have been made only by the expenditure of considerable time and 
money. 
Whatever of worth was accomplished depended largely upon 
those who assisted me, and I wish here to express my thanks to 
William E. Ross, E. K. Hill, and J. H. Lavery, all of Farmington, 
New Mexico, for their faithfulness to the work in hand under all cir- 
cumstances. Mr. Ralph Linton, of Swarthmore, Pennsylvania, con- 
tributed his services during part of the summer of 1913. Mr. A. B. 
Hardin, of Denver, Colorado, directed me to several of the most 
important ruins and furnished valuable information as to the loca- 
tion of springs and trails. 
1 Bulletin of the Archeological Institute of America, Vol. IV, Nos. II and III, p. 41. 
74936°—_19—33 rrH—11 161 
