What happened to all the copper engraving plates the USGS used to use?
June 4, 2013 10:47 AM Subscribe
My dad has a unique coffee table that his father (a geologist) made, in which the top surface is a copper plate once used by the USGS to print topographic maps. I was curious if I could find any more of these plates out there somewhere.
posted by silvergoat to Media & Arts (14 answers total) 7 users marked this as a favorite
All I have been able to find out is that the USGS abandoned the copper plate process in 1942, which is probably when my grandfather acquired this one. There must have been many thousands of them - so where did they all go? Wasn't able to find any on ebay, or any information about collectors/collecting on google. Partly wondering if this is rare or valuable, but mostly just for my own curiosity and edification.