1. EAP1190/1/5/2/76 Reference (shelfmark): EAP1190/1/5/2/76 Title: The 40-inch Yerkes Refractor. Scope & Content: Printed label: "BI 51. The 40-inch refracting telescope, with floor at lowest position. (157) / YERKES OBSERVATORY: 100 Representative Slides.". Round sticker: "3". Rectangular sticker: "16". n/a. Extent: 1 lantern slide. Size and dimensions of original material: Height 8.2 cm, width 10.2 cm,... Collection Area: Endangered Archives Programme Languages: Not applicable Date Range: 1891-1994 Extent: 1
