In the April number of the Geographical Review, a coloured world map on a scale of 1 to 50,000,000 compiled by R. R. Platt shows the distribution of official topographic maps as available at the ...

The DeLorme Topo USA vector maps begin with the small-scale 1:100,000 USGS metric topography map. While the 7.5 minute quad (Illustration 1) depicts a through trail, the small scale 1-to-100 shows ...