Brian, While I am not a cataloguer and cannot answer your specific question, I would like to comment on cataloging of these maps. Fire insurance maps (such as Sanborn) are different from other publications in that almost all the existing copies were "working" copies. Very few copies of the original maps were ever sold and if it weren't for the copyright submissions to the Library of Congress, most of the originals would not exist. The working copies were used by insurance underwriters, government agencies, and others and were kept up to date through subscription. These copies routinely had updates pastes over the original map. In my opinion, there are three key dates that need to be part of a catalog record. There is the original date (oftentimes month and year but just year in larger cities), the date the map has been revised to (this is critical - it tells what date the map represents; month and year, but use date of correction and not date attached), and finally there may be a republished or reprinted date (when a map got so full of updates it became unwieldy, they would reprint a copy with all its updates and start updating all over again). The revised date is most critical and it will vary from one volume to another in a larger city with multiple volumes. Regards, David [cid:image003.jpg@01D8750D.DFBADE20]<http://www.historicalinfo.com/fimo/> [seemoreincolor] David Hodnefield President [log in to unmask]<mailto:[log in to unmask]> 952-253-2004 Historical Information Gatherers (HIG) www.historicalinfo.com/fimo/<http://www.historicalinfo.com/fimo/> [LinkedIn-Logo-02]<https://www.linkedin.com/organization/2985404>[facebook icon]<https://www.facebook.com/search/top/?q=historical%20information%20gatherers%20-%20hig>[twitter icon]<https://twitter.com/HistoricalInfo1>[youtube icon]<https://www.youtube.com/playlist?list=PLftxFDJe-tuucvIyAujnPQa7mKcddUAED> From: Maps-L: Map Librarians, etc. <[log in to unmask]> On Behalf Of Brian Falato Sent: Tuesday, May 31, 2022 4:05 PM To: [log in to unmask] Subject: Re: Question on Sanborn maps Thank you. I have discovered more problems. We have 2 sets of 4 volume atlases. Both have on title page "Insurance maps of Tampa, Florida, 1931." 1931 is the copyright date. But one set of volumes has updates in the volumes for 1953-1961, and the other set has updates for 1953-1962. Since the title proper is the same, I made authorized access points for one set with the title proper and delimiter s (1953-1961 updates) and the other set the title proper with delimiter s (1953-1962 updates). I have used the revision dates in the 264 field for publication, and the copyright date in a separate 264 subfield c. In the fixed field dates, should I be coding date status as m for multiple dates, or as t and use the last revision date and the copyright date? Another problem I discovered is that one set has a note on title page that says "Includes Port Tampa City." Port Tampa was an independent city at one time but was later absorbed into the Tampa city limits. I was going to make separate subject headings that include Port Tampa (Fla.) since that is an authorized heading. But the geographic cutters that you would use in field 052 do not list Port Tampa. Should I use Port Tampa in subjects without an 052 or should geographic headings/subheadings be used only in conjunction with 052? Brian Falato Senior Cataloger Collections & Discovery University of South Florida Libraries Tampa, FL 33620 [log in to unmask]<mailto:[log in to unmask]> 813-974-1772 From: Andrew, Paige G.<mailto:[log in to unmask]> Sent: Tuesday, May 31, 2022 3:35 PM To: Maps-L: Map Librarians, etc.<mailto:[log in to unmask]>; Brian Falato<mailto:[log in to unmask]> Subject: Re: Question on Sanborn maps Brian, Let me answer your second question first. The map cataloging community prefers that we now use the decimal degree format for coordinates in the 034 field as it is the coded or machine-readable part of the record for mathematical data. Continue to use degrees, minutes, seconds in the 255$c (though optionally one can use decimal degrees here too, though since this is the "human readable" area for mathematical data most folks know how to "read" DMS format more easily/quickly than decimal format, at least for now). All of this is spelled out in the MAGIRT map cataloging best practices document: https://www.ala.org/rt/sites/ala.org.rt/files/content/MAGIRT/Documents/MapRDABestPractices2020_Final.pdf<https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.ala.org%2Frt%2Fsites%2Fala.org.rt%2Ffiles%2Fcontent%2FMAGIRT%2FDocuments%2FMapRDABestPractices2020_Final.pdf&data=05%7C01%7Cbfalato%40USF.EDU%7C22d6f03937694938b65308da433cba7b%7C741bf7dee2e546df8d6782607df9deaa%7C0%7C0%7C637896225370336043%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=7sh6cyoG0xv1XWjV7gheiaHYRYqTehIgp2YqFdIN4V0%3D&reserved=0> The tougher question is what to do when including coordinates for places that have changed in area and shape over time, including Sanborn maps. And in your case, what about an additional community that was surveyed along with Tampa? When we cataloged our PA Sanborns I believe we chose to give x,y point or "centerpoint" coordinates because most often the center point of a populated place doesn't change over time (I'm sure that is not entirely true). However, if you wish to use bounding box coordinates naturally the Klokan Bounding Box tool is going to give you those for the areal extent of Tampa from very recent times. And a large city more likely more greatly enlarged its area over time than smaller communities. Because of that it makes more sense to me to provide "current" coordinates knowing that they most likely encompass more area than say, Sanborn sheets from 100 years ago; but that is better than providing coordinates from 1922 knowing they would only cover a portion of today's city. Is Temple Terrace adjacent too or part of Tampa? If so, and if you pursue bounding box coordinates, it should be relatively easy to expand whichever side or sides of the box in Klokan to include that community. Paige From: Maps-L: Map Librarians, etc. <[log in to unmask]<mailto:[log in to unmask]>> on behalf of Brian Falato <[log in to unmask]<mailto:[log in to unmask]>> Sent: Tuesday, May 31, 2022 2:34 PM To: [log in to unmask]<mailto:[log in to unmask]> <[log in to unmask]<mailto:[log in to unmask]>> Subject: Question on Sanborn maps At the University of South Florida, we have multi-volume atlases consisting of fire insurance maps for various parts of Tampa, Florida. The atlas doesn't have coordinates. The authority for Tampa contains coordinates, but I'm wondering if that's for current boundaries. If the maps don't show parts of the city that were largely undeveloped at the time, would the coordinates given still be put in the cataloging record? One volume says it includes the adjoining city of Temple Terrace. If I can't find four point coordinates for Temple Terrace, do I just use the Tampa coordinates? Also, are decimal coordinates preferred now, or is the recording of degree/minutes/seconds just as acceptqable? Brian Falato Senior Cataloger Collections & Discovery University of South Florida Libraries Tampa, FL 33620 [log in to unmask]<mailto:[log in to unmask]> 813-974-1772 [EXTERNAL EMAIL] DO NOT CLICK links or attachments unless you recognize the sender and know the content is safe.