Where can I determine the value of a set of Pen Etchings that are from the original plates by Russell Henderson? I did a Google search, looked on e-Bay, etc., and still no luck. It's a set of six with a cover that also contains a bit of his art and calligraphy that notes "ready-mounted for framing, these intriguing and illuminating pen etchings are from the original plates by Russell Henderson - $1.00 each - Complete set of six $5.00" then there is a notice of "Processd by Ashley Publishing Co., P.O. Box 1352, Columbia, S.C.". These are primitive prints as follows: "Look Before You Leap" (Great Frog on a Lilypad); "Don't Tread on Me" (Hillbilly with rifle and dog guarding a still); "Business Down Here is a Little Still" (Hillbilly sitting on stump with rifle and smaller illustrations on either side of same hillbilly shooting the revenuer); "Where the heart is..." (Old primitive negroes on wagon being pulled by a mule and dogs running to the side); "From year to year the South shows a vigorous, amazing, steady growth -- Official Report" (Old home with lots of negroes on front porch and dogs with nursing puppies in yard, rooster chasing chickens, mules with babies in fence to side, pigs and earthworms, too); "I ain't mad at nobody" (old negro on mule with lots of dogs running beside him; he's dressed in old plaid suit, has corncob pipe, glasses, tipping his tophat, white lightening bottle to his back and a long pole over his shoulder which has an opposum tied to the end). These are all in brown ink and are beautifully detailed.