US Topo

US Topo maps and the maps of the Historical Topographic Map Collection (HTMC) can be downloaded free of charge, in PDF fo
Yes. The following applies to both US Topo maps and the Historical Topographic Map Collection (HTMC) GeoPDF maps.
Yes, it is possible to convert GeoPDF to GeoTIFF, but all the methods we know of have some drawbacks, particularly for layered PDFs like US Topo maps.
Yes. Quadrangle topographic maps originally published as paper documents in the period 1884-2006 have been scanned and published as the USGS Historical Topographic Map Collection (HTMC).
US Topo is intended to serve map users who are not GIS specialists.
The original USGS 7.5-minute topographic map series (1945-1992) included feature classes that are not yet shown on US Topo maps.
Boundaries are an ongoing issue for the US Topo project due to the lack of national GIS datasets suitable for general-purpose, 1:24,000 scale maps. The earliest US Topo maps (2009-2010) showed no boundaries except the US national boundary.
Publication of 1:25,000-scale US Topo maps in Alaska began in July 2013.
Not for US Topo maps. These maps are derived from GIS data and packaged in traditional map form for the benefit of non-specialist users. Most of the data used to make US Topo maps are available from USGS through map services and staged datasets.