Material: glass, paper. Size: 2 1/2" W. x 8" L. x 1/8" D. Description: three negative slides between two glass plates - black taped edges - gold bordered circular pictures with gold corner graphics - print between pictures: "Gem Slide" - green label on back with captions: "1. Penn's treaty with the Indians, 1682; 2. Battle of Bunker Hill, 1775; 3. Washington crossing the Delaware, 1776".