The four epochs of VLBA images of 1156 + 295 at 15 GHz. The contour maps represent Stokes I images. The pseudo-color maps overlaid on contours represent the distribution of fractional polarization in which linear polarization intensity above 4σ is shown. The length of the short bars represents the strength of the polarized emission, 1   mas ~ 1.0 × 10^-2 Jy beam^-1. The orientation of the short bars represent the apparent electric vector position angle (EVPA) without a rotation measure correction. The detailed parameters of the images are listed in Tables 2 and 7.