Port of San Francisco, strategic center of world trade : sea routes shown on the butterfly map invented by B.J.S. Cahill.

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Record Details

Title: Port of San Francisco, strategic center of world trade : sea routes shown on the butterfly map invented by B.J.S. Cahill.
Item Description: Front
Added Entry - Personal Name: Cahill, B. J. S. (Bernard J. S.), 1867-
Published: [San Francisco? : s.n., 1913?]
Description: 1 map : col. ; 22 x 40 cm
Note: "Pat. 2-25-13."; Text and steamboat timetables on verso.
Subject Added Entry - Topical Term: Butterfly map.; Shipping Maps. http://id.loc.gov/authorities/subjects/sh2010112980; Steamboat lines Maps. http://id.loc.gov/authorities/subjects/sh85127728
Map Data: Scale [ca. 1:120,000,000] ; Butterfly projection (E 180°00'00"--W 180°00'00"/N 90°00'00"--S 90°00'00").
Coded Cartographic Mathematical Data: a 120000000 W1800000 E1800000 N0900000 S0900000
Local note: MiU copy lacks text and timetables on verso. In lower left corner "28883 19-23 5M". California State Printing Office, Sacramento. "Map of the World on th Butterfly Projection, showing the Port of San Francisco as a world center. Straight lines on this projection represent great circles and will scale true to distance in any direction." Accession no. 114254.
Scan Date: 2016-04-14
Record No.: 003608693

Technical Details

Collection: UM Clark Library Maps
Image Size: 7536 x 4332
File Size: 2 MB
Record: 003608693
Link to this Item: https://quod.lib.umich.edu/c/clark1ic/x-003608693/39015095414390_01

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Manifest: https://quod.lib.umich.edu/cgi/i/image/api/manifest/clark1ic:003608693:39015095414390_01

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Full citation: "Port of San Francisco, strategic center of world trade : sea routes shown on the butterfly map invented by B.J.S. Cahill.". https://quod.lib.umich.edu/c/clark1ic/x-003608693/39015095414390_01. University of Michigan Library Digital Collections. Accessed December 03, 2023.