Original 1st printing 8&1/2 x 11" promotional flyer for Philadelphia radio station WFIL hosting a fundraising event, the "WFIL Helping Hand Marathon", a 3-day broadcast which ran from 5/16-18/1975 and featured (multiple) guest appearances by none other than John Lennon.

 Photo by Bob Gruen, thin flat stock flyer is in near mint (A-) condition; just a whisper of handling wear and that's pretty much IT... a very clean example of this oddball mid-70's John Lennon item from Philadelphia.

 Apparently John hung out for the ENTIRE weekend, sitting in on the broadcast, mingling with fans and just hanging out... hard to believe, but here's the first part of the (very amusing) broadcast:

https://www.youtube.com/watch?v=WQvRTWwzJBo