WelcomeSunday, December 4th, 2022
Sanborn Fire Insurance Co. Surveyors' Manual
For those who aren't aware of them, the Sanborn Fire Insurance Company produced detailed maps of the built-up parts of many US cities. These maps are a valuable resource for surveyors in that they provide a fairly detailed snapshot of the nature of building improvements in place at early dates. Here's an example of a detail of one such map overlaid on modern aerial photography:
If you're interested in the Sanborn maps for Texas cites, the Perry-Castañeda Library Map Collection has very good scans of quite a few available for download:
Sanborn employed hundreds of surveyors in this large-scale mapping effort. Beginning in 1905, they published a detailed manual, "Surveyors' Manual for the Exclusive Use and Guidance of Employees". Does any reader either have a copy of this manual or, better yet, have a pdf of it that they would be willing to share?
hi kent. there appears to be one at kansas u library in their rare books collection
Moe Shetty, post: 357346, member: 138 wrote: hi kent. there appears to be one at kansas u library in their rare books collection
Yes, the KU Library copy is the 1936 edition. The original published in 1905 is what I'm really after.
A few years ago I marked out a grid for an archeologist documenting pre-Columbian artifacts uncovered when Kronprindsens Gade (Main Street), Charlotte Amalie, St. Thomas was being rebuilt. He supplied this Fire Insurance Map. Most of the buildings are the same and have the street numbers on them. The Bank of St. Thomas is abandonded but still has the beautiful cast iron façade and galleries. I don't know how old the map is.
I love those old maps. I know they have them for much of NJ because they came in handy when I worked at an environmental firm trying to locate old manufacturing buildings and the like.
We would later survey and map the borings to show contamination plumes and also perform monitoring well certifications. I think that is the most differential leveling I've done out of any of the jobs I had.
Does anyone know if there's a link for those maps where you can search by location?
How in the world do you survey on streets in Charlotte Amalie?
If I recall correctly Kronprindsens Gade is basically “parallel” to Veterans Drive. If the traffic on Kronprindsens Gade is anything like on Veterans it must be extremely difficult, especially when the Port is full. I've been there a bunch of times and the traffic is horrendous! :woot:
In this case, the block was closed for a month to excavate for utilities, then for the archaeology. Just a lot of pedestrians.
After a bit of research I found they are available to most public libraries in CA via digital means. If you have a library card for a library that subscribes, then you can view them for free. Not sure about obtaining copies. You may need to purchase them to get copies.
Our library in the San Francisco Bay area had the maps on microfiche, and they could be copied from the machine by the page. The maps proved to be a valuable piece of evidence for the location of an historic creek that had been replaced with a culvert back in the early part of last century.
James Fleming, post: 357463, member: 136 wrote: Dan,
This site has a lot of old maps form the Northeast.
Our version of the Sanborn maps is the ""Baist's Real Estate Atlas" of Washington DC.
I really like "EXPLANATIONS" instead of "LEGEND"...
1905 is the 2nd edition. First was 1898.