If you need to select a topic from articles published in MAA journals, there are three primary options.
First, you can browse the journal tables of contents.
Second, you can search the index to Mathematics Magazine and the College Mathematics Journal. This index from Harvey Mudd College searches article titles, authors and first paragraphs and is complete through 2009. You can find access to the articles via JSTOR.
Third, you can also search MAA journals (Mathematics Magazine, College Mathematics Journal, Math Horizons and the American Mathematical Monthly) by doing an advanced in JSTOR. This will search the full text of all articles. Use the "Get It" button to request the full text of articles we don't have access to.