BV color‐magnitude diagrams for the three dSph galaxies in our program, Draco, Sextans, and Ursa Minor. The red giant branch stars for which we have HIRES spectra are indicated for Draco (circles), Sextans (triangles), and Ursa Minor (squares). The four Draco stars observed by Shetrone et al. (1998) are also shown in the first panel. Photometric data for Draco, Sextans, and Ursa Minor are from Stetson (2000), Suntzeff et al. (1993), and Cudworth et al. (2000), respectively. The lower right panel shows the location of our program stars in the M_V–(B−V)₀ plane. Dashed lines show 13 Gyr isochrones from Bergbusch & Vandenberg (1992) having metallicities of ﹩[ \mathrm{Fe}\,/ \mathrm{H}\,] =-2.26﹩, −1.66, and −1.26 dex. The symbols are the same as in the proceeding panels.