His first cover appeared in Curtis Publishing Company's Country Gentleman magazine in January 1931. In 1948, Baum provided illustrations and an introductory essay for the Selected Short Stories of Thomas Hardy (published by Rodale, Inc., Emmaus, Pennsylvania). Baum also worked as an art critic and reviewer for the Philadelphia Evening and Sunday Bulletin, a position in which, as an artist himself, he was able to bring a unique perspective that became popular with readers. In this role, he was also able to promote local art and artists. During the Great Depression, a period during which artists found it extremely difficult to find work, his column was important in keeping the vibrant Philadelphia art community active and informed. Allentown Art Museum The Allentown Art Gallery was organized by Baum and opened in Allentown's Hunsicker School on March 17, 1934. With seventy canvases by local Pennsylvania impressionist artists on display, the gallery attracted major attention from the local and regional art communities. During the Great Depression, Baum was able to grow the collection through the Public Works of Art Project and through acquisitions and gifts. In June 1936, the City of Allentown granted the museum a permanent home in a Federal-style house located in the Rose Garden in Allentown's Cedar Park. The museum's first curator was local artist John E. Berninger, a student of Baum's, who lived with his wife on the museum's second floor. Bucks County Traveling Art Gallery In 1949, Walter Emerson Baum and Dr. Charles H. Boehm, Bucks County Superintendent of Schools, established the Bucks County Traveling Art Gallery, a program whose goal was to expose school children of Bucks County to the artwork of the New Hope School and the Pennsylvania Impressionist movement. The county-wide program was formally established by Boehm after positive feedback was received from parents and teachers when a Baum painting was purchased to celebrate the retirement of one of Baum's grammar school teachers. The program was officially unveiled in a ceremony at the Bucks County Playhouse in New Hope, Pennsylvania. Notable Bucks County residents including Pearl S. Buck took part, as did many of the artists whose paintings were purchased for the gallery. The collection, which now includes over 350 pieces of art, has visited all of the thirteen school districts in the county, and is managed by the Bucks County Intermediate Unit and maintained by the James A. Michener Art Museum. Artists represented