Many professors will send out generic letters. They are usually reserved for the "I took your class last year and got an A but this is the first time we've spoken outside of class" kind of letter request. You don't want those.
All of my letter writers got a binder with:
1) A table consisting of a list of schools, addresses, POIs, whether there were supplemental materials they wanted in addition to the letter, the dates the letters should go out (earlier than actual due dates), and what should be done with the letters (sealed and given to me, mailed directly, submitted online).
2) CV
3) Transcript, GREs
4) Drafts of personal statements for all schools
5) A brief description of my duties and activities in their lab (all of my letters were people I did research with).
Also printed out all supplemental materials for them, and gave them stamped and addressed envelopes. Didn't bother including anything on the type of program - I'd spoken with all of them extensively about it and they knew I was looking for intensive research programs (I think there were only 3-4scientist-practitioner models on my list of 15, and the rest were clinical science models) and even if they didn't remember it was fairly obvious from looking at the list of schools. If you haven't spoken with them directly about it or you are applying to a broader range, then its probably worthwhile to include that.
Probably overkill, but if there is ever a time to suck up and put on a good show, its when you are asking someone for a letter of recommendation.