K_s vs. J − K_s CMD for sources in IC 10. The background is a Hess diagram of the sources from the SAGE catalog of the LMC (Meixner et al. 2006). The IC 10 sources are corrected for reddening and then “moved” to the LMC for comparison. AGB stars fall within the labeled region in the upper-right region (Cioni et al. 2006; Nikolaev & Weinberg 2000). O-rich AGB stars are redder than the left oblique line while C-rich AGB stars are redder than the right oblique line. Sources #10, #11, #15, and #16 are foreground sources not associated with IC 10, and are marked with green triangles. Source #17 is not a 2MASS source.