This may have come up before but I can't recommend this book source enough:
AbeBooks Official Site - New & Used Books, New & Used Textbooks, Rare & Out of Print Books
Been using ABE for awhile now and it's been invaluable to me replacing lost
volumes and finding unusual titles.
For those not familiar they are on on-line vendor that connect buyers with small book stores internationaly.
I recently had to replace a few books
from Hiscock, Street as well as Diane Beeston's wonderful Of Wind Fog and Sail
, published by Chronical Books
and now out of print. Through ABE I found a very nice edition for very easy money
from Freinds of the S.F. Maritime museum.
I love this book. I've attached a lovely pic from it of Stars in action. Beeston was a great photographer and so many fabulous shots that capture what a joy it is to sail S.F. Bay. Cannot rcommend it enough!