Final answer:
The humor in Roosevelt's almanac is expressed through satire that mimics the style of an uneducated person, using devices such as misspellings or grammatical errors for comedic effect.
Step-by-step explanation:
The humor found in Roosevelt's almanac is likely a form of satire or parody. The clue suggests that the writing intentionally imitates the style of an uneducated person, using misspellings, grammatical errors, or malapropisms to create a comedic effect. This type of humor points out the folly or ignorance in a situation by contrast, often used by authors to make a point about the subject of their satire.