Polarization line segments overlaid on DSS R-band 25′ × 25′ field toward Kronberger 1 in panel (a), Berkeley 69 in (b), Berkeley 71 in (c), King 8 in (d), and Berkeley 19 in panel (e). The length of the segment is proportional to the degree of polarization, and the orientation depicts the polarization angle. The red lines represent the polarization measurements of probable member stars, and the solid gray line in the upper left corner corresponds to the orientation of the Galactic plane. A reference line for the polarization of 5% and a polarization angle of 90° is also drawn in the lower right corner of each panel.