Hold That Baby! was the 14th entry in Monogram's money-spinning "Bowery Boys" series. Ever in search of spare change, the Bowery Boys, headed by Slip Mahoney (Leo Gorcey) go into the laundromat business. While unfolding some linen, Sach (Huntz Hall) comes across a seemingly abandoned baby. The infant turns out to be their heir to a huge fortune. Hoping to return the baby to its mother (Anabel Shaw), who has been wrongfully committed to a mental institution, Slip, Sach and the boys must contend with the child's avaricious aunts (Florence Auer and Ida Moore) and a bunch of gangsters. The best scene finds Slip posing as a Viennese psychiatrist; almost as good is a vignette involving Sach and a hospital supply room.