Early 1940's, green boards, orange endpapers, pink spine edition with picture of the twins sitting in a meadow on the front. Frontis illustration. Lists to 'At Mystery Mansion' on front flap, Honey Bunch titles on back flap, Maida books on the back. Top edge stained red. Light browning to edges of pages. Corners very lightly bumped, Jacket has a little edgewear, now protected in mylar..