Hi all,

I'm a librarian in La Sorbonne library, geography department. Apologies for my english. 

We did in the end of 2016 the cataloging of a USGS serie, called with different names : "30 x 60 minute series (topographic)" (we have a few "planimetric" too) ; "1:100 000-scale metric topographic map of...", and follows the name of a town or a site ; "30x60 minute quadrangle". This maps were produced in the 70's and 80's by the USGS. The library have a great part of this serie for many years now.

I'd like to make a brief history of this production, to inform my patrons and enhance this collection. I searched in the USGS website, but I found very few informations. Do you know if there is a (historical) review of this map serie somewhere online ? Or in a print document (and I'll try to get this document afterwards) ?

Thank you !

Best regards,

--
Caroline Tourette

Tél. 01 44 32 14 61


Bibliothèque de géographie
Institut de Géographie
191, rue Saint Jacques
75005 Paris