photometric estimates of stellar distances for stars in our catalog based on $M_V$ [*vs.*]{} $(B-V)_o$ relations for non-variable stars, as described below, and an adopted $M_V$ [*vs.*]{} $\feh$ relation for RR Lyrae variables.

### Apparent Magnitudes and Colors

Our primary source of $V$-band apparent magnitudes and $B-V$ colors for non-variable stars is the photometry obtained during the course of the HK survey, if available (with typical accuracy in $V$ magnitudes and $B-V$ colors in the range 0.005 to 0.01, respectively). Additional photometric information was taken from the SIMBAD database, the [*Hipparcos*]{} Catalogue, and the calibrated photographic photometry of SPM 2.0, and GSC 1.2.

There are several hundred HK survey stars in our catalog which presently lack measured photometry. For these stars we have estimated the $V$ magnitudes and $B-V$ colors in the following manner. An estimate of the $B$ magnitude is obtained from GSC 1.2, where available. An approximate de-reddened $(B-V)_o$ color is obtained from available medium resolution spectroscopy, based on the calibration of the Balmer line index $HP2$ described by Beers et al. (1999). This is then reddened using the listed estimated to reddening in the direction toward the star, and the resulting $B-V$ is obtained. This color is 