Further episodes in the saga of the little house halfway up the next block, in which ""Uncle Fletcher, from Dixon, Is a House-Guest,"" ""Vic Confides in Rush About Mothers,"" ""Schoolmate Telephones Sade from the Bus Station at 4:20 A.M.""--for starters. In his foreword Jean Shepherd speaks of Rhymer's ""wild and subtle imagination""; regrets that he ""never wrote for the more recognized media""; suggests assembling a convivial group and reading the scripts aloud. Astute observations all.