Before his remarkable Little Nemo in Slumberland, Winsor McCay created two strips starring young children. This book features all of the Little Sammy Sneeze color pages (1904-1905), in their full original size, plus the complete Hungry Henrietta, McCay's other 1905 comic, which appeared on the back of Sammy in the Sunday New York Herald. The book, which is 11 X 16 inches, features two other "flipside" comics of 1904: The Woozlebeasts and The Upside-Downs.

Zenas Winsor McCay (c. 1867–71 or September 26, 1869 – July 26, 1934) was an American cartoonist and animator. He is best known for the comic strip Little Nemo (1905–14; 1924–26) and the animated film Gertie the Dinosaur (1914). For contractual reasons, he worked under the pen name Silas on the comic strip Dream of the Rarebit Fiend.

In his drawing, McCay made bold, prodigious use of linear perspective, particularly in detailed architecture and cityscapes. He textured his editorial cartoons with copious fine hatching, and made color a central element in Little Nemo. His comic strip work has influenced generations of cartoonists and illustrators. The technical level of McCay's animation—its naturalism, smoothness, and scale—was unmatched until Walt Disney's feature films arrived in the 1930s. He pioneered inbetweening, the use of registration marks, cycling, and other animation techniques that were to become standard.