All, I don’t think that the DMA topo series (1:50,000) were ever meant to cover the entire US. If these are the ones that are printed so they are “red-light readable,” it’s been my observation that they seem to be centered around large military installations and associated government land (for example, USFS, BLM) that is used for training exercises involving large area maneuvers. Never underestimate the power of good location information when planning combat scenarios. Kathy Stroud Cartographic and Government Information Librarian 1299 University of Oregon Libraries Eugene, OR 97403 541-346-3051 schedule an appointment @ https://uoregon.libcal.com/appointment/42037 From: Maps-L: Map Librarians, etc. <[log in to unmask]> On Behalf Of Craig Haggit Sent: Thursday, December 14, 2023 10:04 AM To: [log in to unmask] Subject: Re: Indexing US 24k series... feedback please I can respond on the AMS part. Post-World War II the AMS and DMA published state sheets too (25K and 50K). I'm not an expert in this, and couldn't speak to how far they got in completing the set, but for Maryland, it's series V733 (25K) and V833 (50K). Attached is a photo of part of the V733 index sheet. Craig Craig Haggit Map and Geospatial Librarian, Special Collections and Archives Denver Public Library 10 West 14th Ave. Parkway Denver, CO 80204 720-865-1813 [log in to unmask]<mailto:[log in to unmask]> Let's be social! [https://68ef2f69c7787d4078ac-7864ae55ba174c40683f10ab811d9167.ssl.cf1.rackcdn.com/facebook-icon_16x16.png] <https://urldefense.com/v3/__http:/www.facebook.com/WHGnews/__;!!C5qS4YX3!DZTTHhjmM9ryo3BL8MeGuXPmEsp_x-4eDRAm0zCqy5qbQt-91yKdfQDBdUjMe4506qwIabmhnn9UiYJ7rOAo3yv0$> [https://68ef2f69c7787d4078ac-7864ae55ba174c40683f10ab811d9167.ssl.cf1.rackcdn.com/instagram-icon_16x16.png] <https://urldefense.com/v3/__http:/www.instagram.com/dplvintage/?hl=en__;!!C5qS4YX3!DZTTHhjmM9ryo3BL8MeGuXPmEsp_x-4eDRAm0zCqy5qbQt-91yKdfQDBdUjMe4506qwIabmhnn9UiYJ7rNBnhI0A$> [https://68ef2f69c7787d4078ac-7864ae55ba174c40683f10ab811d9167.ssl.cf1.rackcdn.com/twitter-icon_16x16.png] <https://urldefense.com/v3/__http:/twitter.com/whgnews?lang=en__;!!C5qS4YX3!DZTTHhjmM9ryo3BL8MeGuXPmEsp_x-4eDRAm0zCqy5qbQt-91yKdfQDBdUjMe4506qwIabmhnn9UiYJ7rJb96MI3$> On Thu, Dec 14, 2023 at 10:16 AM [log in to unmask]<mailto:[log in to unmask]> <[log in to unmask]<mailto:[log in to unmask]>> wrote: Brendan, May I ask what you mean by "AMS" maps in your U.S. topo collection? Looking at your Maryland set (my state), you indicate that purple is for maps from both AMS (1:25,000) and USGS (1:24,000). I work with the map collection at the University of Maryland library - we have almost all the USGS 1:24000 maps for the entire U.S., but only a few state collections (most incomplete) of the 1:25000 maps. Both the 24K and 25K maps were produced by the USGS. We have sets of "AMS" maps, but they were Army Map Service maps mainly of countries in Europe, Africa, Asia, etc. I believe our library received those AMS maps (mainly older maps from the 1930s-50s) because we are a depository library entitled to receive publications from the U.S. Government, and those older Europe, etc., maps were 'left overs' from the World War II era? Thanks! Jim Nealis Map Volunteer, Univ. of Maryland McKeldin Library On Thursday, December 14, 2023 at 07:04:38 AM EST, Brendan Whyte <[log in to unmask]<mailto:[log in to unmask]>> wrote: Hi all, After years of procrastination, I have begun indexing our US 24k series (very incomplete... we stopped collecting these when an exchange programme with USGS ceased 20-30 years ago) I have made an overall US map showing which states have been properly indexed to date, and attached this to our catalogue record https://catalogue.nla.gov.au/catalog/6855508<https://urldefense.com/v3/__https:/catalogue.nla.gov.au/catalog/6855508__;!!C5qS4YX3!DZTTHhjmM9ryo3BL8MeGuXPmEsp_x-4eDRAm0zCqy5qbQt-91yKdfQDBdUjMe4506qwIabmhnn9UiYJ7rADaXClb$>, along with coloured-in indexes of each of the 19 smallest states. The plan is to work my way through the remaining 30 states in 2024.... wish me luck! Please let me have any feedback on what I have done so far. (once you've opened the US index, click 'browse this collection' in the breadcrumbs to see the individual state indexes) What have others done in the way of online indexes for the series? We have never even considered cataloguing the sheets individually... but I guess we could have done individual records (and indexes) for each state set, and linked them with an overall parent series record similar to our existing record... but that's nevertheless more work for the cataloguers. Compliments and criticism most welcome before I embark any deeper into this project... Merry Christmas! Brendan Whyte National Library of Australia