This publication, covering a field of southwestern interest hitherto unworked, has had material assistance from Governor Thos. E. Campbell, himself a student of Arizona history, especially concerned in matters of development. There has been hearty cooperation on the part of the Historian of the Mormon Church, in Salt Lake City, and the immense resources of his office have been offered freely and have been drawn upon often for verification of data, especially covering the earlier periods. There should be personal mention of the late A.H. Lund, Church Historian, and of his assistant, Andrew Jenson, and of Church Librarian A. Wm. Lund, who have responded cheerfully to all queries from the Author. There has been appreciated interest in the work by Heber J. Grant, President of the Church, and by many pioneers and their descendants.

The Mormon Church maintains a marvelous record of its Church history and of its membership. The latter record is considered of the largest value, carrying out the study of family genealogy that attaches so closely to the theology of the denomination. During the fall of 1919, Andrew Jenson of the Church Historian's office, started checking and correcting the official data covering Arizona and New Mexico settlements. This involved a trip that included almost every village and district of this State. Mr. Jenson was accompanied by LeRoi C. Snow, Secretary to the Arizona State Historian and a historical student whose heart and faithful effort have been in the work. Many corrections were made and many additions were secured at first hand, from pioneers of the various settlements. At least 2000 letters have had to be written by this office. The data was put into shape and carefully compiled by Mr. Snow, whose service has been of the largest value. As a result, in the office of the Arizona State Historian now is an immense quantity of typewritten matter that covers most fully the personal features of Mormon settlement and development in the Southwest. This has had careful indexing.

Accumulation of data was begun the last few months of the lifetime of Thomas E. Farish, who had been State Historian since Arizona's assumption of statehood in 1912. Upon his regretted passing, in October of 1919, the task of compilation and writing and of possible publication dropped upon the shoulders of his successor. The latter has found the task one of most interesting sort and hopes that the resultant book contains matter of value to the student of history who may specialize on the Southwest. By no means has the work been compiled with desire to make it especially acceptable to the people of whom it particularly treats—save insomuch as it shall cover truthfully their migrations and their work of development. With intention, there has been omitted reference to their religious beliefs and to the trials that, in the earlier days, attended the attempted exercise of such beliefs.

Naturally, there has had to be condensation of the mass of data collected by this office. Much of biographical interest has had to be omitted. To as large an extent as possible, there has been verification from outside sources.

Much of the material presented now is printed for the first time. This notably is true in regard to the settlement of the Muddy, the southern point of Nevada, which in early political times was a part of Arizona Territory and hence comes within this work's purview. There has been inclusion of the march of the Mormon Battalion and of the Californian, New Mexican and Mexican settlements, as affecting the major features of Arizona's agricultural settlement and as contributing to a more concrete grasp of the idea that drove the Mormon pioneers far afield from the relative comfort of their Church centers.

JAS. H. McCLINTOCK,
Arizona State Historian.

Phoenix, Arizona, May 31, 1921.