I’m not sure about finding a specific person but the following document has some helpful tips for preparing the plates for display:
ftp://ftpext.usgs.gov/pub/er/va/reston/Engravings/140807%20cleaning%20the%20engravings.pdf
Bruce Godfrey
GIS Librarian
University of Idaho
From: Maps-L: Discussion Forum for Maps, Air Photo, Map Librarianship, GIS, etc. [mailto:[log in to unmask]]
On Behalf Of Angela R Cope
Sent: Friday, November 14, 2014 12:53 PM
To: [log in to unmask]
Subject: cleaning/polishing/'enhancing' copper map plates
From: Susan Brazer <[log in to unmask]>
Sent: Friday, November 14, 2014 2:12 PM
To: [log in to unmask]
Cc: Susan Brazer
Subject: cleaning/polishing/'enhancing' copper map plates
Due to extreme stubbornness on my part, I was lucky enough to *finally* get a set of copper map plates from the USGS surplus offering that started
over the summer. Our beautiful trio of plates were delivered today....and now we need to have them cleaned up & enhanced so that they can be framed for public display.
Does anyone have any tips about how to find a reputable person to do this sort of thing? Recommendations? Warnings?
Susan Brazer