I have 2 original pieces by Therlee Gipson that I bought in 1975. They are both pencil sketches on paper. One is 8 X 10 & the other is 3 X 5. I can't find anything on the internet about their value. Has anyone ever heard of him or know anything about what they are worth? The 8 X 10 is of an old black women who is crying. Mr Gipson told me she was crying because someone stole her social security check. The other is of a lion. The detail on both is fantastic. This is the only art I have that I actually met & talked to the artist so I probably wouldn't sell the old lady but I'd like to know if I should insure it.