A recent post in the New Mexico Archaeological Council listserve (NMAC) was
quite interesting and notes a guide that many may not know about:
Mike Polk
Sagebrush Consultants
Ogden, Utah
NMAC-L 8-19-13 from Jeremy Kulisheck, Forest Archaeologist:
A couple of years back, I was frustrated that the Clorox Company no longer
had their 20th century bottle guide available in an easily printable format
—and the copy I had was a barely readable 5th or 6th generation
photocopy. So I went to their website and pasted together a new guide from
information spread across several web pages that can be printed on a single page.
But I don’t think I ever shared it with folks on NMAC. So here it is. Print
it out 11x17 landscape, on a color printer. Ready to fold in half and stick
in your clipboard for the field.
For the full guide, spread across several web pages, go to
http://www.thecloroxcompany.com/company/heritage/