Taylor Guitars was established as a small shop in 1974 by Bob Taylor and Kurt Listug, El Cajon, California. [Source: wikipedia]
Dating Taylor Guitars
TRY THIS FIRST http://www.guitardating.com/taylor.php
Taylor guitar catalog and pricelists
Taylor guitar forums http://www.taylor-talk.com/blog/
Taylor reference books
Images: eBay, Joyful Noise:
The first label Taylor serial number is 1688 which works out as a 1982 guitar. The second label Taylor serial number is interpretable from the label itself, year 2000, November, 9th.