Left panel: color-composite image of LH 91 from WFC3 observations in the F555W, F814W, and F656N filters. The image is rotated 30 deg to align the two figures. Right panel: distribution of the PMS stars. Symbols are the same as in Fig. 5. The crosses represent the massive stars from the 2MASS catalog, and the triangles are Be stars from Table 1 of Gouliermis et al. (2002). North is up and east to the left.