UT Austin Rush
 

What are the differences between letters of support and letters of recommendation? How many should I have for each house?

They are not "letters" of recommendation - they are recommendations. It's a form that each group has which the alum has to complete and send in. The letters of support are simply that - a letter, not the form - supporting the recommendations.

Two of each, I believe and someone will correct me if I am wrong, are the minimum.