Seeing the post by Union in the Latest News section of COLTi: http://www.antique-locks.com/showthr...5328#post25328 reminded me of The Yale Book of Finishes in our Archive. It contains the chemical formulas and processes for the finishes of Yale products in the first half of the 20th century. After a three page introduction there are 4 pages or an index of the finish and its description followed by 74 pages of formulas. Fascinating stuff especially if restoration or reproduction to match existing or just to enlighten in the way it used to be done.

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If there is sufficient interest I could get the whole book (about 100 pages) scanned and placed in one of the libraries here...