The Presidents of the United States is one of many marketing promotional pamphlets published by the John Hancock Mutual Life Insurance Company of Boston, Massachusetts, 1931. Issue number 129.At the time as well as now booklets such as this are informational and educational. Advertising pamphlets are a relatively inexpensive vintage collectible hobby that can be sought out and collected by the subject (example: American Presidents), company (i.e. John Hancock Mutual Life), location (i.e. Boston), or perhaps for a name or word association (i.e. things related to John Hancock). Ephemera such as promotional pamphlets and other artifacts from history can be found in antique stores, garage and yard sales, thrift stores, auctions, and even in the clutter in your own home. Encouraging a hobby like collecting ephemera with accompanying internet research is a fun educational tool for children and youth.For example, the last president in the pamphlet is Herbert Hoover. We can note that the entry comments about "the war." This indicates that at the time of publication the second World War had not taken place. There are remarks about world travel and projects that Hoover worked on--what were the projects about? Mr. Hoover served in various administrative positions--what is the description of these positions? Do they still exist today? He was in China during the Boxer Rebellion--what was this event in history about? How many presidents were present at Hoover's inauguration? Who were they?