ASHLAND, Wis. (AP) — Fifty years ago, President John F. Kennedy flew over the Apostle Islands and Bad River Watershed, landed at the Ashland Airport and delivered a speech about the need to conserve pristine areas for recreation and economic interests. Seven years later the Apostle Islands became part of the National Park system. The Chequamegon Bay area on Tuesday will mark Kennedy's visit on Sept. 24, 1963 and the attention he brought to the Apostle Islands. Former Congressman Dave Obey worked with Sen. Gaylord Nelson on the Apostle Island legislation. Obey will speak at Tuesday's celebration in Ashland, along with Tia Nelson, the daughter of the late senator.