MSX infrared images (color scale and contours) of the environment around the location of G78.8870+0.7087 and G81.8713+0.7807. The Spitzer and WISE images of these two sources are saturated in at least one band. The first panel in each row shows a three-color map constructed using MSX 8.28 μm (blue), 12.13 μm (green), and 14.65 μm (red) images. Other four panels: infrared emission for each of the four MSX bands. The nth white contour is at , where S_max is the maximum flux shown in the color bar (W m⁻² sr⁻¹) for each panel, n = 0, 2, 4..., and p is equal to 3%. The green crosses mark the positions of the masers as measured in D-array configuration maps. The Galactic names of the GLOSTAR sources are indicated at the bottom of the second image in each row.