Lot of 8 Nancy Drew Twin Thrillers

Lot of 8 Nancy Drew Twin Thrillers printed in the 1970s. All are in good condition with normal shelf wear. Note a few photos to show scuffs/marks to the covers and spines. The Clue in the Crumbling Wall/Mystery of the Tolling Bell has an inscription as pictured, but no writing noted in the other seven books. The Spider Sapphire Mystery/The Invisible Intruder has creased end pages and a small tear. Tried to capture it in the photo. I'm willing to break up the lot. This lot can't be bundled due to weight limits for shipping.