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Easy way to remove collars from GeoTIFF of USGS Topo?

Question asked by smwineland on Oct 28, 2017
Latest reply on Nov 3, 2017 by CBenkelman-esristaff

I have downloaded a lot of GeoTiffs of historical topo maps from the USGS (https://ngmdb.usgs.gov/topoview) at the 1:24000 scale. I am wanting to Mosaic these together to eventually clip to watershed boundaries, however the white collars on the outside are proving to be a headache. I have not been able to find a solid answer on these forums or anywhere else on the internet of how exactly to remove the collars. 

 

Does anyone have an answer?

 

Any help would be appreciated!

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