I'm applying for an Honors program within my college during my undergraduate degree, and need a letter of recommendation from a professor in my specific field. However, because there are few professors in this field who have taught my classes, I'd need to ask someone who already provided me with a letter last year (for an award, which I won, if that makes a difference).
I know the question of "how many recommendation letters" was answered here, but I'm referring to letters requested at different times, far apart. Will this individual, if they remember me, likely be annoyed that I returned to them? Do professors save these things (perhaps they could recycle the same letter)?