Port of San Francisco, strategic center of world trade : sea routes shown on the butterfly map invented by B.J.S. Cahill.
About this Item
- Port of San Francisco, strategic center of world trade : sea routes shown on the butterfly map invented by B.J.S. Cahill.
- Item Description
- Added Entry - Personal Name
- Cahill, B. J. S. (Bernard J. S.), 1867-
- [San Francisco? : s.n., 1913?]
- 1 map : col. ; 22 x 40 cm
- "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
- Record No.
- UM Clark Library Maps
- Image Size
- 7536 x 4332
- File Size
- 2 MB
- Link to this Item
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DPLA No Copyright - United States
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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.