For those of you with an interest in historical aspects of legal citation, the fine folks at The Bluebook have put up PDFs of the first 15 editions (1926-1991) of their seminal “Uniform System of Citation.”

Here are the links:
*1st Edition (1926)
*2nd Edition (1928)
*3rd Edition (1931)
*4th Edition (1934)
*5th Edition (1936)
*6th Edition (1939)
*7th Edition (1947)
*8th Edition (1949)
*9th Edition (1955)
*10th Edition (1958)
*11th Edition (1967)
*12th Edition (1976)
*13th Edition (1981)
*14th Edition (1986)
*15th Edition (1991)

The 16th (1996), 17th (2000), and 18th (2005) editions are not available in PDF, although the 18th edition has recently been made available electronically for a fee.

For true citation history buffs, the Law School library’s Special Collections Department has the 1925 proposed Bluebook, which pre-dates the 1st edition.