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Optimum way to display 60+ USGS historical maps (tiffs) in ArcGIS online?

Question asked by afsi95405 on Aug 13, 2019
Latest reply on Aug 26, 2019 by CBenkelman-esristaff

I have a railroad line and would like to display 60+ USGS historical maps as background. Ideally, in ArcGIS online, these tiff files can be turned on and off, and their transparency levels modified.  See attached image for a snapshot of the maps in ArcMap. If they all have to be On, that's fine. But their transparency level does need to be modifiable by the user. 


There are different references online to how to display a tiff on ArcGIS online. I also thought I read once that I can directly connect to the USGS server? 


What's the recommended way to go about this? I'm new to ArcGIS online.