The Port of Portland is the port district responsible for overseeing Portland International Airport, general aviation, and marine activities in the Portland, Oregon metropolitan area in the United States. Originally established in 1891 by the 16th Oregon Legislative Assembly, the current incarnation was created by the 1970 legislature, combining the original Port with the Portland Commission of Public Docks, a city agency dating from 1910. The Port of Portland owns four marine terminals, including Oregon's only deep-draft container port, and three airports. The Port manages five industrial parks around the metropolitan area, and they own and operate the Dredge Oregon to help maintain the navigation channel on the lower Columbia and Willamette rivers. History 19th century In 1891, the Oregon Legislature created the Port to dredge and maintain a shipping channel from the city of Portland to the Pacific Ocean. Through the years, the Port acquired the Commission of Public Docks, which operated public-use docks in Portland Harbor, and they built Portland's first airport. 20th century The Port of Portland's administration was embroiled in questionable business practices in the early 1930s. Port authorities, including James H. Polhemus, the general manager of the port from 1923–1936, were found guilty of mismanagement, both through conflict of interest and cronyism, as well as negligence, sale of equipment at lower than assessed prices, carelessness, and preferential treatment of some private shippers. Much of the blame was because of discounted rates for using the port's dry dock. Companies specifically named as beneficiaries of this graft were McCormick Steamship Company and States Steamship Company. The investigating committee called for the resignation of Polhemus and other staff. On November 20, 1933, shortly after the commission found Polhemus and his staff guilty, professional auditor Frank Akin was found shot to death. His murder was never solved, leading to many conspiracy theories. In mid-December, the Port commissioners voted to reject the investigating committee brief, meaning Polhemus was exonerated. Polhemus stayed with the Port for another three years before becoming a vice president at Portland General Electric. MacColl summarized the events in 1979, saying this: 21st century From the mid 1970's until 2007, the Port itself operated Terminal 6, the sole shipping container terminal in Oregon, losing money every year but two while seeing its role as that of subsidizing the state's greater economy. In an attempt to operate the port sustainably, the port signed a 25-year lease in 2010