Highlights include a collection of personal letters from Amelia Earhart to the guest’s aunt that feature Earhart’s entrepreneurial and self-promotional sprit; Joseph Delaney drawings, circa 1950, purchased from the Knoxville artist’s own home for $20 each and now valued at $2,000 to $3,000; and two Jacob Maentel watercolors, circa 1835 and larger than average, that are appraised for $60,000 to $80,000.