The Huntington Digital Map Collection is an internet catalog of over 8,000 maps of California and the World from The Huntington Library, Art Collection & Botanical Gardens.  The maps range from 16th century European portolan charts to 20th century land use maps, including maps owned by British explorer Sir Richard Burton; the Solano-Reeve collection of surveys of Los Angeles and Southern California tracts; and printed tract maps from the Rare Book Collection.  You can see all of the available maps in the Huntington collection with thumbnails and short descriptions so you can easily choose the ones you want to view more fully.  Check it out!