  Images recorded through J, H, Ks, 2.2 micron continuum, and 2.3 micron CO
filters are used to investigate the stellar contents of the low Galactic
latitude globular clusters NGC 6528, Liller 1, Djorgovski 1, and HP 1, as well
as surrounding bulge fields. Metallicities are estimated for the latter three
clusters by comparing the colors and CO indices of giant branch stars with
those in other clusters and the bulge, while reddenings are estimated from the
colors of bright bulge stars in the surrounding fields. In some cases the
metallicities and reddenings are significantly different from previous
estimates.
