Clue of the Silken Ladder, #5 Penny Parker Mystery By Wirt, Mildred A Books / Hardcover Fiction › Mystery & Adventure Publisher: Cupples & Leon, January 1941 Price $11.88 Free Shipping Send to a friend Used - Acceptable With Dust Jacket Acceptable condition. Acceptable dust jacket. Penny Parker Mystery #5. Hinges starting to crack. Owner's name on inside. Toned. $11.88 1 in Stock at Warehouse Quantity Add Free Shipping to continental U.S. OR $1.00 per item discount if shipped to store.