This drawing identifies wind forces and their effects on the physical structure. Notes are included on this drawing for example: "Stresses in lower sections of tension diagonals equal or smaller than top sections, but same riveting to be used in detail." The drawing includes a key for live load, dead load, impact, wind at 150 pounds per linear foot, wind stress due to traveler, equivalent to live load. The drawing shows top and bottom laterals. Total weight of the carrier and car is given as 240,000 pounds. The scale is given as 20 feet equaling one inch. Drawing H5421, Sheet 3.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
Detailed drawing of four parts of the Aerial Bridge. The end view is a drawing of a tower; part side elevation is of half of the Aerial Bridge with the suspended car transfer. The third drawing is called Section A-A and depicts a tower without the cross structures drawn in. The last drawing is called Section B-B, which is a top down view of one of the towers resting on its footings. All of these drawings have dimensions. The part side elevation includes a very small drawing of the side of the gondola car. The end view includes the phrase "car approaches built by city." The finials are shown on three of the four drawings. Drawing H5421, Sheet 2.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
The post card caption says The Aerial Bridge, Span 393 feet 9 inches, 135 feet high from water line. Cost $100,000. This post card illustration is of a view from the waterfront. At the right is the South Breakwater Inner Light Tower. Houses on Minnesota Point are at the far right. Engineer C.A.P. Turner, of the Gillette-Herzog Manufacturing Company of Minneapolis, designed the Ferry Bridge with Suspended Car Transfer in February 1901, meeting federal specifications. Bids were opened March 25, 1901, but only one was received. The Duluth Canal Bridge Company was awarded the contract but abandoned the work. In February, 1904, the Modern Steel Structural Company of Waukesha, Wisconsin was issued a contract. Work began July 20, 1904.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
The post card caption says The Aerial Bridge, Span 393 feet 9 inches, 135 feet high from water line. Cost $100,000. This post card illustration is of a view from the Duluth harbor with the U.S. Army Corps of Engineers Building at the left and the South Breakwater Inner Light Tower at the right. Houses on Minnesota Point are at the far right. Engineer C.A.P. Turner, of the Gillette-Herzog Manufacturing Company of Minneapolis, designed the Ferry Bridge with Suspended Car Transfer in February 1901, meeting federal specifications. Bids were opened March 25, 1901, but only one was received. The Duluth Canal Bridge Company was awarded the contract but abandoned the work. In February, 1904, the Modern Steel Structural Company of Waukesha, Wisconsin was issued a contract. Work began July 20, 1904. The aerial bridge transporter or gondola or transfer car roadway was 17 feet by 50 feet with sidewalks seven feet by 50 feet; the cabins were 30 feet long.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
The suspended car transfer was replaced in 1929 with the Aerial Lift Bridge span. The building at the left is the wholesale grocer Gowan Lenning Twohy.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
Set of 37 sheets of architectural drawings accepted for the City of Duluth by Samuel F. Snively, Mayor, and John Wilson, City Engineer, Plans Accompanying Specifications of January 1929. Technical drawings with varying degrees of legibility. There is only one elevation in the set; Sheet 1. The original bridge was the Aerial Bridge constructed in 1904-1905. The bridge was modified in 1929 with a lift span and subsequently called the Aerial Lift Bridge. These plans are highly technical and were designed for the use of engineers and specialty contractors. Each drawing indicates that certain features of the structure have been revised. This set appears to represent the final revision. The Lift Bridge was designed by Harrington, Howard and Ash Consulting Engineers, Kansas City and New York. Patented in the United States from 1909-1925.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
Two unidentified men hold a copy of a national magazine whose cover features the Aerial Bridge. These men are probably with the Chamber of Commerce. The June 14, 1947, Saturday Evening Post cover of Duluth Aerial Bridge with boat is by John Atherton. John Carlton Atherton was born in Brainerd, Minnesota, on June 7, 1900. Atherton would eventually illustrate over forty covers for Saturday Evening Post, starting with his December 1942 design, Patient Dog. In the late 1940s, Albert Dorne, fellow Saturday Evening Post illustrator, founded the Famous Artists School, an institution to teach the art of correspondence illustration. John Atherton was among the famous artists such as Al Parker, Jon Witcomb, and Norman Rockwell, who contributed to the program. Atherton eventually moved to Arlington, Vermont. The famous illustrator and artist died at age fifty-two (in 1952) in a drowning accident while fly-fishing in New Brunswick, Canada. He was survived by his wife, Maxine Breeze.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
The 1893 First Methodist Episcopal church occupied the corner of Third Avenue West and Third Street in downtown Duluth until the congregation built the 1965 church building designed by architect Pietro Belluschi that everyone calls the Copper Top church at Skyline and Central Entrance. This brownstone structure closed in November 1966 and was razed in 1969.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
A view from an upper window of the Duluth Malt and Brewing Company at Twenty Ninth Avenue West between Huron and Railroad streets. These Lincoln Park houses will be lost during interstate construction.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
Hillside housing stock built with a rock outcrop in the backyard; A Master Bread billboard is at the top of the image. The Zinsmaster family opened a bakery called Zinsmaster Hol-Ry Company in Duluth in 1931. Master Bread was one of their brands. The structure that looks like it is framed by the Aerial Lift Bridge is the Huron Portland Cement silo that later became LaFarge Cement. It still stands on the Duluth waterfront. The white trimmed brick structure at the top right is 1515 West Superior Street, the Duluth Gospel Tabernacle building. The building to the right but further east on Superior Street with the arched window is a Minnesota Power station and garage at about Fourteenth Avenue West and Superior Street.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
Looking toward Canal Park from East Second Street, Calvary Temple Church is at the center right with a white cross. The church address is 412 East First Street. Next door to Calvary is Curran Apartment building with three front stoops at 408 and 410 East First Street. The very top of Hotel Duluth at far right top. This residential area was absorbed by Miller-Dwan Hospital and its parking facilities.
Contributing Institution:
University of Minnesota Duluth, Kathryn A. Martin Library, Northeast Minnesota Historical Collections
Birdseye view of the Stillwater Lift Bridge and the Commander Building in Stillwater, Minnesota. The Stillwater Lift Bridge is a vertical-lift bridge crossing the St. Croix River between Stillwater, Minnesota, and Houlton, Wisconsin. It first opened to traffic in 1931.