Many of the site gags seen here would be used in future by popular WB frenemies, Coyote and Roadrunner.
The will being read to Droopy and Spike is signed "W. Higgins". This refers to Bill Higgins, who was an assistant animator but never received screen credit for his work on MGM cartoons.
The is a spin on "Rags to Riches", which refers to a person who rises from poverty to wealth or fame; it is a literary theme used by writers such as Horatio Alger.