Hi Amy,



Great question! When I weeded our map collection, I took a tiered approach regarding previous editions of topographic maps. For instance, you might want to keep one copy of each edition for the local area, but only keep the most recent copy for more distant areas. You could make similar tiered decisions regarding the scale of the map and distance away from your location, hanging on to all USGS map scales for your local area, but remove the 1:24,000 scale maps of more distant areas, and remove additional scales the further away you go.  



A more detailed outline of one way to structure your retention decisions like this is in Chapter 5 of the Conducting a Map Collection Review workbook. The good news about that is, it's free to download from this link: https://bit.ly/ACRLMapReview. I hope you'll find it useful!



Best,



Janet Reyes

Geospatial Information Librarian

UCR Library | University of California, Riverside

P.O. Box 5900 | Orbach Library, Room 128

Riverside, CA 92517-5900

Office: 951.827.6421 | Fax: 951.827.2255 | [log in to unmask]

  

-----Original Message-----

From: Maps-L: Map Librarians, etc. <[log in to unmask]> On Behalf Of Amy Koshoffer

Sent: Thursday, April 18, 2024 1:03 PM

To: [log in to unmask]

Subject: Photorevised 7.5 topos maps



Hello All - 



I have recently become the liaison for several departments and am taking care of our print map collection as part of my duties. I am a complete novice here.  We are planning to move most of the collection to an off-campus site.  This is an opportunity to weed, and I wondered if folks keep copies of photorevised maps.  I was thinking to just keep the most recent.  Is there a reason to keep the older ones?   



A colleague suggested this new ebook from Janet Reyes at UC Riverside: Conducting a Map Collection Review: A Workbook to Help You on the Journey as general resource.  Will be ordering soon.



Cheers,

Amy Koshoffer

U of Cincinnati