Floating in the Deep End"For the decade of my father's illness, I felt as if I was floating in the deep end, tossed by waves, carried by currents, but not drowning," writes Patti Davis in this searingly honest and deeply moving account of the challenges involved in taking care of someone stricken with Alzheimer's. When her father, the fortieth president of the United States, announced his Alzheimer's diagnosis in an address to the American public in 1994, the world had not