Question: John Spalvins, born Janis Gunnars Spalvins, in 1936, in Latvia, was Managing Director of the Adelaide Steamship Company from 1977 until the company's collapse in 1991, it was formed by a group of South Australian businessmen in which year?

Context paragraphs:
HMAT Wandilla: SS "Wandilla was a steamship built in 1912 for the Adelaide Steamship Company.  The ship operated on the Fremantle to Sydney run until 1915, when she was acquired for military service and redesignated HMAT "Wandilla.  Initially used as a troop transport, the vessel was converted to a hospital ship in 1916.  "Wandilla" was returned to her owners at the end of the war, then was sold to the Bermuda & West Indies SS Company and renamed Fort St. George in 1921.  She was sold in 1935 to Lloyd Triestino and renamed Cesarea before being renamed Arno in 1938.  At the start of World War II, the ship was acquired by the Regia Marina for use as a hospital ship.  She was sunk by British aircraft on 10 September 1942.

John Spalvins: John Spalvins, born Janis Gunnars Spalvins, in 1936, in Latvia, was Managing Director of the Adelaide Steamship Company from 1977 until the company's collapse in 1991.  During this period under Spalvins' control, "AdSteam" became Australia's major corporate entity with interests and significant holdings in retailing, food, wine, dairy, hardware, building, banks, and numerous other companies.  "Spalvins built up one of Australia's largest industrial conglomerates, which took in David Jones, Woolworths, Metro Meat, food company Petersville Sleigh, beer and wine company Tooth & Co, as well as a tugboat business, before it was put into receivership in 1991."

Adelaide Steamship Company: The Adelaide Steamship Company was formed by a group of South Australian businessmen in 1875.  Their aim was to control the transport of goods between Adelaide and Melbourne and profit from the need for an efficient and comfortable passenger service.  For the first 100 years of its life, the main activities of the company were conventional shipping operations on the Australian coast, primary products, consumer cargoes and extensive passenger services.

Pacific Coast Steamship Company: The Pacific Coast Steamship Company was an important early shipping company that operated steamships on the west coast of North America.  Organized in 1867 under the name of Goodall, Nelson and Perkins the company.  The Goodall, Nelson & Perkins Steamship Company was formed in 1875, but a year later reorganized as the Pacific Coast Steamship Company.  In 1916 the Admiral Line bought the shipping interests of the company.

SS Penola: SS "Perth", formerly SS "Penola" was a  GRT steamship operated by the Adelaide Steamship Company.  "Penola" was notable for ramming and sinking the SS City of Launceston, a passenger steamship, in Port Phillip Bay on 19 November 1865.  Renamed "Perth", the steamship ran aground and was wrecked off Point Cloates in Western Australia on 17 September 1887.

Union Steamship Company of British Columbia: The Union Steamship Company of British Columbia was a pioneer firm on coastal British Columbia.  It was founded in November 1889 by John Darling, a director of the Union Steamship Company of New Zealand, and nine local businessmen.  The company began by offering local service on Burrard Inlet near Vancouver and later expanded to servicing the entire British Columbia coast.  Initially a cross-harbour service with the steamers "Senator" and "Lonsdale", the line was asked to take on more roles, calling in at Howe Sound, Gibsons Landing, and various logging camps and sawmills.  The demand outstripped the availability of vessels.

Pacific Steamship Company: The Pacific Steamship Company was an American freight and passenger shipping company that operated between 1916 and 1936.  The company was formed by the merger of the Pacific Coast Steamship Company and the Pacific-Alaska Navigation Company and was a direct competitor to the Alaska Steamship Company in the Alaska-Seattle shipping business.

Walter Leslie Duncan: Walter Leslie Duncan (14 February 1883 – 28 May 1947) was an Australian politician.  Born in Armidale, New South Wales, he was educated at state schools before becoming a clerk, and was President of the Labor Council of New South Wales in 1911.  A member of the Labor Party, he joined the Nationalists in the wake of the 1916 split over conscription.  Duncan enlisted in the military in 1917, leaving in 1919 to successfully contest the Senate for the Nationalists.  A strong supporter of Billy Hughes, he was excluded from the party along with Hughes in 1929 and joined the Australian Party, before being reaccepted into the United Australia Party in 1931.  He resigned from the Senate in 1931.  He was also a Director of the Adelaide Steamship Company for many years.  Duncan died in 1947.

Adelaide Steamship House: The Adelaide Steamship House is located at 10-12 Mouat Street, Fremantle.  Built in 1900, the building was designed by Fremantle based architectural firm Charles Oldham and Herbert Eales and was constructed by C. Coghill.  The building takes its name from the original owners of the building, the Adelaide Steamship Company, who provided sea passenger and freight services around Australia.

SS Oregon (1878): SS "Oregon" (1878–1906) was a coastal passenger/cargo ship constructed in Chester, Pennsylvania by the Delaware River Iron Ship Building and Engine Works in February 1878.  Originally delivered to the Oregon Steamship Company, she was used on the Portland, Oregon-to-San Francisco, California route for many years.  In 1879, the Oregon Railroad and Navigation Company became the "Oregon"′s new owners after purchasing the Oregon Steamship Company.  Also included in this purchase were the steamships "George W. Elder" and "City of Chester".  While in O.R. & N service, "Oregon" served alongside SS "Columbia", which made the first commercial use of Thomas Edison's incandescent light bulb.  Like "Oregon", "Columbia" was also built by John Roach & Sons in Chester, Pennsylvania.  Over time, "Oregon's" hull became breached after a number of incidents.  Furthermore, the hull had been weighted with concrete to the point where she was considered unsuitable for service as a passenger liner.  After operating as a cargo ship, she was laid up in 1894 at Portland.  In 1899, the "Oregon" was re-qualified to carry passengers once more.  She was sold by O.R. & N the same year.  Despite this, she was viewed as a cursed ship by her crew.  The "Oregon" was owned by the White Star Steamship Company (not to be confused with the White Star Line) from around 1902 to 1905 .  Around this time, "Oregon" was operating between Alaska and Puget Sound.

Supporting paragraphs: John Spalvins Adelaide Steamship Company
Answer: 1875