Lot of 2 David Chandler Night Sky Planispheres From 1977 & 1992 30 - 40 Degrees

Lot of 2 David Chandler "Night Sky" planispheres from 1977 and 1992. Designed for viewing the night sky from 30–40 degrees north latitude. Good pre-owned condition; the 1977 planisphere shows normal wear from use and age, while the 1992 planisphere is stored in a plastic sleeve.