Intriguing ledger book used for three distinct and significant purposes over some 40 plus years. It started out as a ledger for recording requests for marriage licenses in San Francisco in 1862. The first 70 unnumbered pages are an index for the names to be entered alphabetically, with spaces for both the man and the woman, and numbered pages 3-15 contain some 47 requests, each approximately eight to ten lines, in the hand of San Francisco County Clerk Washington Bartlett, signed by Bartlett and by the male, and in one instance female, party (a few signed with an X). The requests state the man lives in San Francisco, giving his approximate place of residence, and that of his prospective bride, that she is 18 years or older, where she resides (in some cases it has been with the prospective groom!), the parent or guardian’s consent if applicable, etc. Two of the requesting parties are Chinese. The second section of the ledger, pp. 18-49, lists various properties for sale by Bartlett & Randolph, Real Estate Brokers, from 1872 to 1877 – evidently Washington Bartlett, future mayor of San Francisco and Governor of California, saw no reason to let such a hefty ledger go to waste when he moved on from being County Clerk. The various properties and their locations, mostly in San Francisco but some in other Bay Area or Northern California locales, are described, and often the prices are listed. Some of the descriptions are neatly crossed out, a few are marked Sold. There are four sketch maps on letterhead of Bartlett & Randolph affixed to the leaves, and one map directly on a ledger leaf. The descriptions are in various hands. Following its use in the real estate trade, the ledger was used for recording rainfall and discharges from various creeks and reservoirs in Northern California, beginning with a report from 1875 but primarily listing data from 1903 to 1906, comprising nearly 100 pages. These include Alameda Creek, Calaveras and La Honda Creeks, Calaveras Dam site, Arroyo Valle above Spring Valley, etc. The listings are in both ink and pencil, and many are quite rough, though there are some carefully compiled rainfall tables. As water became harder to get, and population grew, feasible sites for dams and reservoirs were apparently being sought. Overall, a rare and exceptional ledger, with much source material in an evolving and growing California.