This CD is an essential tool for anyone doing research in the first Census of California. It lists every name in the original microfilm, and every name in the transcription, along with the page number where each entry is found. It is a bridge between the two documents and will save untold time in trying to find any particular record in each. It also contains a history of the census, along with two important maps, the California county outlines as they were in 1852, and as they are today. The disk contains over 170,000 entries.