During Governor Pollard's administration, the General Assembly passed the Optional Forms Act. Under this act, two types of county government were made available for selection according to local preference: the county-manager form, usually preferred by urban and large rural county areas and the county-executive form, generally preferred by small rural areas. As a result of this act, several county administrative offices were merged for more efficient and economical management. In August 1933, a special session of the Virginia legislature was held to select delegates for a special convention to vote on the repeal of the Eighteenth Amendment to the United States Constitution. Although Governor Pollard at first refused to summon the extra session, he was forced by petition of two-thirds of both houses of the General Assembly to do so. Subsequently, the delegates favored the repeal of the amendment by a vote of 96 to 54. The vote by the people was actually a referendum vote, but ballots for repeal automatically elected a slate of thirty delegates-at-large who were pledged to a repeal vote. Later, at a special convention, the delegates voted to repeal the Eighteenth Amendment by favoring the Twenty-First Amendment. The General Assembly then created its own regulations for the sale of liquor and provided for the establishment of Alcoholic Beverage Control Boards throughout the Commonwealth. When President Franklin D. Roosevelt appointed Claude A. Swanson of Virginia as the first Secretary of the Navy in his cabinet, ex-Governor Harry F. Byrd was appointed to succeed Swanson as United States Senator. Harry F. Byrd was elected United States Senator at the next national election. Thus, in 1933, Senator Byrd began one of the longest periods of continuous service in the United States Senate. In 1935, the first national park in Virginia and the second national park east of the Mississippi River was established. It was called the Shenandoah National Park and was dedicated by President Franklin D. Roosevelt. This very scenic park, which now includes the famous Skyline Drive, was made possible by the combined efforts of many people: Governor E. Lee Trinkle who publicly advocated the establishment of parks, numerous citizens who willingly donated property (because Virginia had been informed by the federal government that it would have to furnish the land), the state which also contributed land after it had purchased it or condemned it and the federal government which helped financially with appropriations and with physical labor furnished by the Civilian Conservation Corps. This park has attracted tourists from throughout the nation with its breath-taking mountain scenery and diversity of trees and wild flowers.