Accessing USGS Topographic Maps on The Internet

This (almost) seems outdated these days as we typically 'stream' those layers nowadays as opposed to downloading them to a local computer. Still, there is often a need to do that and Joe Kerski has compiled a nice set of sources for those Accessing USGS Topographic Maps on The Internet, for example:

• The Libre Map Project
• USGS Maps
• USGS Historical Topographic Map Explorer
• topoView
• https://www.historicaerials.com/