INTRODUCTORY REMARKS. 



The world's history and its civilization are closely propor- 

 tional to the accurate mapping of the territory. In early set- 

 tlenients only rude diagrams are made to meet the wants of 

 the time, but as civilization and population increase a wider 

 knowledge of the geography and topography is necessary to 

 meet the requirements of greater traffic and improvements. 

 Hence, the mapping of any country is a progressive work. 

 As the country becomes populated and political divisions are 

 made, detailed maps are required to construct railroads, geo- 

 logical surveys, wagon roads, and other improvements, and 

 triangulation is extended over the country to produce a map 

 to meet these wants. 



Dr. J. C. Rowell, of the State University, made a catalogue 

 of the maps of California in the year 1887, which Avas pub- 

 lished in Library Bulletin No. 9. Its object was to catalogue 

 all the maps of the State, including county and other maps, 

 for which he made an endless research in the libraries, official 

 dociunents, railroad and real estate offices, mining companies, 

 etc. This added much to our knowledge in making up this 

 bulletin. 



The work is endless, and many maps of the State have not 

 been catalogued. The maps of early voyagers and overland 

 explorers have not been included, as their enumeration would 

 have extended the list to double its limits. Those of the 

 former have been published in the following: 



1. H. H. Bancroft's History of the Northwest Coast, vol. 

 1, chap. 1-10. This contains an extended account of the pro- 

 gress of discovery on the coast as well as reproductions of 

 numerous early maps. 



2. Justin Winsor's The Kohl collection of early maps, be- 

 longing to the Department of State, Washington, U. S. A. 

 This catalogue commenced publication in the Harvard Uni- 

 versity Bulletin, vol. 3, p. 171, and was subsequently issued as 



