Linda Ann     Whitehouse Crum, 59     PORTLAND -- Linda Ann Whitehouse Crum, 59, of the Barron Center in Portland, passed away early Thursday morning, Nov. 8, 2007, after a lengthy and physically debilitating illness with multiple sclerosis, through which she maintained her sense of humor and spunk.      Linda, formerly of Connecticut, Maryland and Florida is the beloved mother of Christopher Crum, age 35, who lives in Baltimore, Md. She is survived by her mother, Nancy Whitehouse of Portland; her older sister, Willow Whitehouse Briggs of Freedom, N.H.; and two nieces, Mariah and Mariel Neville.      A service and reception will be held at the Barron Center on Tuesday, Nov. 20, 2007, at 2 p.m.