The BSS and upper main-sequence regions of the M67, NGC 188, and NGC 6791 CMDs. The BSS regions—bounded by the isochrone (solid line), zero-age main sequence (ZAMS; dotted line), and terminal-age main sequence (TAMS; dashed line) found in Paper I—are denoted by the blue areas. Stars with ﹩v\sin i﹩ measurements above our floor of 10 km s⁻¹ are marked with color-coded circles; stars with a measured ﹩v\sin i﹩ below our floor are marked with downward triangles; and stars without ﹩v\sin i﹩ measurements are marked with black × symbols. Non-BSSs that are slowly rotating or are lacking data are shown at a smaller scale for visual clarity of the main sequence. Stars with a ring around the central point have a known white dwarf (WD) companion.