Frank Parks Landis, Sr., 90, of Eustis,FL, passed away Saturday, February 26, 2011 of an undisclosed illness. Parks worked as a chemist in General Electric's Knolls Lab for 35 years. He was an avid conservationist, gardener, carpenter and fisherman. He is survived by his wife, Lucy M. Landis, 2 sons, 1 daughter and 5 grandchildren. Arrangements by Harden/Pauli Funeral Home, Eustis.