"Vintage" is pretty relative. We do historic re-eanctment, so I look for books from the 1800's and early 1900's. I found a scanned copy of the "Workwomans Guide" published in 1835 through Google - tells how to make caps and gowns and such from that era. I used a Dover reprint of a 1905 Butterick book, originally "Dressmaking, Up to Date," to manufacture a bustle for an 1870's walking dress. Fascinating stuff, and the handwork is very detailed. I also like the books that present original garments from the 1700 and 1800's, with detailed drawings and construction notes (Janet Arnold, for example). The 70s and 80s don't interest me as much - I lived through them, don't need sewing books to remind me.