Connecticut, U.S.A. (Zone 5):  My first contact was made with the ARRL Headquarters Station on 40M CW on September 13, 1968.  I was a novice class back then (WN3KOC) and I listened to W1AW code practice transmissions daily to check my code speed to see if I was ready to upgrade my license.  On certain days, W1AW would standby and listen in the novice band for callers.  I was one of the lucky ones on this day.  I have worked W1AW many times since then, espically during the 100 year celebration in 2014.