I just found this. Fourth paragraph from the bottom:
In that race, against Democrat Bob Casey, Jr., the attacks were coming so fast and furious that Santorum decided to issue a pamphlet, titled “50 Things You May Not Know About Rick Santorum.”
http://www.reuters.com/article/2012/01/05/us-campaign-santorum-idUSTRE8032A020120105
Thank you.
Thanks for looking that up. At least now we know the context.