For decades, young Israeli frum readers enjoyed Shmuel Argaman's (Rot) books and magazine serials that gave readers a sense of adventure in a kosher setting. Nothing objectionable ever made it through the pages. Argaman also made sure to put Torah'dige concepts and messages in the books, so that his young readers would be left with a positive message as well, once done reading. Despite being a Ponovizher talmid and Bnei Brak resident, Rot made sure to send the Lubavitcher Rebbe a copy of the book הצוללת הפליגה בחצות, pictured below. He passed away today at the age of 77.
Based on the Rebbe's response it would seem that the Rebbe read the book cover to cover. Not that was out of the ordinary, being the ראש בני ישראל includes children and adolescents as well. But the Rebbe went on to write a quite lengthy letter to Mr. Rot telling him to make the messages more obvious to the reader, so that when he/she puts down the book he takes that message along. Any mechanech worth his weight would tell you that this is important, the Rebbe adds.