Manuscripts
Railroad surveying notes
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Map of the Town of Temecula San Diego Co. Cal. on the line of California Southern Railroad
Rare Books
Hand drawn and blue line printed with numerous handwritten additions of ownership and "Compliments of Geo. M. Pearson." Badly faded."Filed August 24 1892 at request of Fred T. Perris at 11:30 AM. " Prime meridian: GM. Relief: no. Graphic Scale: Feet. Projection: Plane. Printing Process: Blue line print. Verso Text: MS n ote: 291001.
291001
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George Hannum notebook
Manuscripts
The manuscript is titled: A Compendious System of Practical Surveying taken from the latest Author by George Hannum, Philomath, and Taught by John Day, Preceptor. This fragile volume consists of approximately 54 pages of written text and diagrams. This is an advance work of surveying showing how to undertake the solution of complex problems. The manuscript opens with geometrical problems and moves on to right angle and oblique trigonometry. The text then shifts to finding areas of various shapes using logarithms. Also recorded are various methods of mapping and how to draw maps, ad methods of completing surveys for the division of land. It is in this section that Hannum applies colors to the illustrations of some of the surveys. There are two complete surveys and they are segregated in the text by being placed, inverted, on the last blank pages of the manuscript. From Birmingham Township, Pennsylvania.
mssHM 83602
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Geographically Correct Map of the United States issued by Union Pacific Railroad
Rare Books
A map to show the various Army camps, Airbases, and Naval bases at the start of World War II, and how the Union Pacific connected to many of them. Submaps: Union Pacific Railroad connecting lines over Atlantic Ocean; Union Pacific Railroad connecting lines over Pacific Ocean. Prime meridian: GM. Relief: no. Graphic Scale: Miles. Projection: Polyconic. Printing Process: Lithography.
243467
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Cipher for Telegraphic Correspondence; arranged expressly for Military Operations, and for important Government despatches [Cipher Book #1]
Manuscripts
24 pages; 15 x 9 cm. List of cipher holders on inside front cover. Handwritten instructions for use on t.p. verso. Added pages glued in. Cipher for numerals on back fly leaf.
EC 44
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Cipher for Telegraphic Correspondence; arranged expressly for Military Operations, and for important Government despatches [Cipher Book #1]
Manuscripts
32 pages; 15 x 9 cm. List of cipher holders on inside front cover. Handwritten instructions for use on t.p. verso. Cipher for numerals on back fly leaf. Single leaf with handwritten miscellaneous terms.
EC 43
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Cipher for Telegraphic Correspondence; arranged expressly for Military Operations, and for important Government despatches [Cipher Book #1]
Manuscripts
25 pages; 15 x 9 cm. List of cipher holders on front fly leaf. Instructions for use are handwritten and glued onto inside back cover. Added pages glued in. Cipher for numerals on back fly leaf.
EC 45