Sesame Street episodes 1970's-early 80's

[dearestclaire]

Hi everyone! I'm a new member and I'm searching for old Sesame Street episodes from the 70's- early 80's (when I was a kid) to give to my niece. Can anyone help me? I'm afraid I don't have anything to trade but I would be willing to pay for the cost of materials/shipping/your time/etc.. I may be able to trade copies of the Best of the Muppet Show (the Time Life set)- but not for a couple of weeks.
Any help would be appreciated!! Thanks!

:)