The title is a play on that of the 1958 political novel that was made a movie 8 or 9 years later, The Ugly American (1963).
The moose's "Indian love call" counter-lure to Moe Hican's moose call is a gag on the romantic song "Indian Love Call" from the 1924 Broadway musical,
Rose-Marie (1928).
Jarvis, the butler, is in a cameo scene, during final minute of From Hare to Heir (1960), throwing custard cream pies, into Yosemite Sam's face.
The butler is a based on, character actor, Arthur Treacher, who was known throughout his life for playing butlers in film.