Reprojecting when no transformations are listed: georeferenced data on historic maps

01-18-2022 03:26 PM
Regular Contributor

Hey all,

I have some data that I georeferenced from a 1913 USGS 1:63K map, whose projection is given as "North_American_1927_Polyconic". 

I'd like to reproject it to be in NAD83, UTM Zone5. The problem is that no transformations pop up as an option, and the output is the exact same as the original, just it says  "UTM Zone 5".

Does anyone have any tips on how to correctly transform this data?


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