81. Palomar Observatory Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
82. Palomar Observatory, Palomar Mountain, California Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
83. Palomar Observatory, Palomar Mountain, California Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
84. Palomar Observatory, San Diego County, California Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–November 29, 1938] Institution: Anna Maria College
85. Palomar Observatory, San Diego County, California Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
86. Palomar Observatory, San Diego County, California--40 Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
87. Peking, observatory Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1914] Institution: Anna Maria College
88. Royal Observatory, Greenwich Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
89. Searchlight on Mt. Lowe Observatory, Cal., and San Gabriel Valley Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–August 2, 1910] Institution: Anna Maria College
90. Seen from above after its old film of aluminum has been removed, Palomar Observatory's 200" Hale telescope mirror shows its internal honeycomb-like structure Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
91. Sky Ridge Observatory, 3201 Coaltown Rd., Moline, Ill. Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
92. Smith Observatory and residence of Professor Brooks, Geneva, N.Y. Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–March 7, 1912] Institution: Anna Maria College
93. Smith's Observatory, Geneva, N.Y. Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–January 27, 1918] Institution: Anna Maria College
94. Sterling Building, 737 No. Michigan Ave., Chicago Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
95. West Academic Building showing chapel and observatory, West Point, N. Y. Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
96. With its new film of aluminum the 200" primary mirror of Palomar Observatory's 200" Hale telescope waits to be placed back into the telescope Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–1996] Institution: Anna Maria College
97. Mount Holyoke College, South Hadley, Massachusetts, and associated parts of Buckland, Massachusetts Format: Albums/Scrapbooks; Postcards/Cards; Ephemera; Manuscripts Collection: Frank N. Fowler Postcard Collection Date: 1979–1991 Institution: Holyoke Community College
98. Smith College, Northampton, Massachusetts, and associated parts of Hatfield, Massachusetts Format: Albums/Scrapbooks; Postcards/Cards; Ephemera; Manuscripts Collection: Frank N. Fowler Postcard Collection Date: 1978–1991 Institution: Holyoke Community College
99. Cambridge, Mass. Robinson Hall, Harvard College Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–November 20, 1908] Institution: Anna Maria College
100. Gymnasium building, Washburn College, Topeka, Kansas Format: Postcards/Cards Collection: Travel Postcards of Charles Blumsack Date: [ca. 1906–June 1910] Institution: Anna Maria College