Four boys install an old telephone in their clubhouse, and then investigate the mystery of the ringing doorbells. - (Baker & Taylor)
Mysteriously ringing doorbells, overflowing bathtubs, and other mishaps are a job for private eyes Wizzard, Tubby, Skinny, and Snitch - (Baker & Taylor)
Wizard, Tubby, Skinny, and Snitch match their wits against the invisible door ringer. ‘Full of excitement and suspense.’ —Independent Schools Junior Booklist. <p> <awards> Children's Books of the Year 1966 (CSA)</awards> - (HARPERCOLL)