Hershey Dot Cartographic with the 'dot size' increased to 2x, which is more similar to what the paper expected the dot size to be. (In fact, the paper may expect the dot size even larger, but fontstruct's filters don't let it get any larger than 2!)

This is a rendition of one of A. V. Hershey's dot fonts from his 1967 paper "Calligraphy for Computers", the "Mathematical" (serif) font. This version is really a hybrid of the original "Mathematical" and "Cartography" fonts, having some symbols such as the circle drawing and map symbols that the "Mathematical" font originally lacked.

This is a rendition of one of A. V. Hershey's dot fonts from his 1967 paper "Calligraphy for Computers", the "Cartographic" (sans-serif) font, plus a number of glyphs imported from the "Mathematical" font, as well as many additional glyphs drawn in the same/similar style to the original glyphs. This font actually dates to at least as early as June 1963, as it is featured on some diagrams in Hershey's "The Plotting of Maps on a CRT Printer" paper.