<http://schema.org/description>
"Pre-1920s star map used as an educational tool for teaching students about the solar system. The map represented the appearance of the sky on the 15th of each month at the hours mentioned. The plate is pale robin's egg blue and is displayed in a cream rag mat. Plate 67."^^<http://www.w3.org/2001/XMLSchema#string>
<https://www.onekingslane.com/p/1189206-early-20th-c-star-map>