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The Wisconsin Historical Society maintains the Wisconsin History and Architecture Inventory (AHI), consisting of approximately 120,000 properties surveyed by architectural historians or preservation consultants. The inventory has been assembled over a period of more than 25 years from a wide variety of sources. In many cases, the information is dated and properties may be altered or no longer exist. The majority of properties included in this inventory are privately owned and not open to the public. After 25 years of data collection, there are numerous difficulties with inaccurate addresses. Nearly 10,000 properties have errors, which makes it difficult to map out using a geocoder and have to be entered manually and validated with primary and secondary online sources. I will share how Historic Preservationist are using GIS and what online resources I use to validate and find historic sites from the past.
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Lost BuildingsUsing GIS and online Maps to Geolocate Historic Structures.
Michael BricknellWisconsin Historical SocietyHistoric Preservation [email protected]
My Task: To update the Wisconsin Architecture and History Inventory (AHI).
Geolocate 10,000 properties which have incomplete addresses.
• Examples:
NW CNR of Front St and Spring St CHURCH ST (no postal number)
Gov't Lot #6 - Red Ceder Lake
(or a blank address)
• Share what free resources I have found useful in locating properties with little information.
SOURCES• Paper Maps (Historic and Current)• County Geographic Information Systems (GIS)• Aerial Photography (Oblique and Vertical)• Library of Congress - American Memory Maps
(LOC)• Bird's Eye maps (LOC and HistoricMapWorks)• Sanborn Insurance maps (not free online, but
useful)• Geographic Names Information System (GNIS)• Photo Service Websites (Flickr, Photosynth,
PicasaWeb)• Wisconsin Architecture & History Inventory (AHI)
1. Check the Wisconsin Architecture & History Inventory (AHI) for any information. (address, plss, physical description, is it demolished?) ~120,000 records
2.Validate the address, if it has one, on the County’s GIS website.
3. Check the address in Google Maps - Street View and Bing Maps - Bird's Eye View (if available).
4. If no address or conflicting results, I need to validate it with a primary or secondary resources.
Steps
AHIWisconsin Architecture and History Inventory
Who needs access to this information?
•Genealogists
•Engineers
•Architects
•Architectural Historians
•Preservationist
•Property Owners
•Students
http://www.wisconsinhistory.org/ahi/
• Library of Congress – American Memory
LOC
http://memory.loc.gov
SOS!
http://collections.si.edu/search/
Historic Map Works
http://www.historicmapworks.com/
WHAIFinder
maps.sco.wisc.edu/WHAIFinder/
• Google Street View
• Bing’s Bird’s eye view.(Oblique Photography)
BING
Example 1AHI # 4076
County: BURNETT
Property Address:
S WILLIAMS RD
Civil Town: WOOD RIVER
Surveyed: 1978
Is this really the correct address?
23138 not
23001
But there’s more I can do.
AHI # 15566
County: ASHLAND
Property Address:
SE CNR OF E 4TH AVE AND FRONT ST
City or Village: Ashland
Surveyed: 1975
Example 2
Google has failed me once again… Very poor imagery of Ashland AND no Front St and 4th Ave… but wait…
Nothing there?
Prentice Ave
(4th Ave)
Front Street
1886 1890
Example 3AHI # 46630
County: BUFFALO
Property Address:
COUNTY HIGHWAY U
Civil Town: WAUMANDEE
Surveyed: 1994
Artist: Louis Zeller
Check the SOS!
Example 4
NO PICTURE
AHI # 132919
County: COLUMBIA
Property Address:
No Address
Civil Town: DEKORRA
Surveyed: ?
Historic Name:WILLIAM BLACK FARM
Example 5AHI # 54563
County: FOND DU LAC
Property Address:
W MCWILLIAMS RD, BETW. MILITARY RD & DOTY
City: FOND DU LAC
Surveyed: 1974
Conclusion• 3 years ago this would not have been
possible. New and innovative web services have been developed.
• No traveling required!• As more historical collections become
available online the easier it is to validate a resource.
• County GIS data is vital and essential to what I do.
• What will be next?
Questions?
Michael BricknellHistoric Preservation SpecialistWisconsin Historical [email protected]
g
www.mbrickmaps.com
