The wall calendar is from "The Corn Exchange Bank" and shows "April 1920".
One of the short subjects featured in the Goldwyn-Bray Pictograph No. 7042 (also listed as issue #442), released in June 1920. This Pictograph also features "Making the Dirt Fly" (about steam shovels) and "People You'd Like to Know - Maurice Maeterlinck" (showing the Belgian poet and dramatist with his wife on a trip to California), and is reviewed in the 6/12/1920 edition of "The Moving Picture World" as well as the 6/27/192- edition of "Wid's Daily".
The 6/5/1920 edition of "The Moving Picture World" describes a Goldwyn-Bray Pictograph from "the third week in May" that features a subject showing Dr. Simon Flexner studying diseased tissue, "An Enchanted Garden" about flowers in bloom, and a Max Fleischer "Out of the Inkwell" cartoon where "the clown sees a spook and exhibits genuine fear". The first two subjects correspond to Goldwyn-Bray Pictograph No. 7039, as identified elsewhere. The description of the cartoon seems to fit this "Out of the Inkwell" film, though "The Ouija Board" is described elsewhere as part of Pictograph No. 7042 (aka No. 442), released later and with a different lineup of short subjects. According to the 6/1920 issue of "Visual Education", the cartoon packaged with Pictograph No. 7039 is Yes, Times Have Changed (1920).