1960s Stephen Potter Set of 4 Paperbacks Penguin Orange Book Humour Vtg Satire

CONDITION: good used condition with small price stickers on front covers "65c" All 4 books were published in the 1960s by Penguin Books with the traditional orange cover. Includes 4 books: Gamesmanship, Lifemanship, One-Upmanship and Supermanship 1960s Stephen Potter Set of 4 Paperbacks Penguin Orange Book Humour Vintage Gamesmanship Lifemanship One-Upmanship Supermanship Comic Satire Self-Help