CCLA accepted the invitation of the International Correspondence Chess Association (ICCA) to become a member in 1946.
Muir started playing chess in 1917 and didn't stop until shortly before his death in December 1999.
The winner of the First North American Invitational Chess Championship was Robert G. Cross of the United States in 1971.
In 1974, John Cleeve was the first North American to attend an ICCF Presidium meeting, at that time in Nice, France.
Walter Muir realized that the USA needed an ICCF affiliate that could represent members of all US clubs.
The cost of the USPCU operation was borne entirely by the fees paid by US players participating in ICCF events.
The United States Postal Chess Federation, USPCF, became that organization with its own constitution.
As of the current editing (May, 2013), there are now 9 more GMs; Alik S. Zilberberg 1994, Joseph A. de Mauro 1997, Robin Smith and John C. Timm 2004, Dr. Jason Bokar 2007, Daniel M. Fleetwood 2008, Dr. Edward Duliba 2009, Jon Ostriker 2101, and Stephen Ham 2011.
Other notable people inside ICCF-US are Dennis Doren, Friendly Match organizer and ICCF Rules Commissioner; Tom Biedermann who serves as ICCF Entry Commissioner and ICCF-US Deputy Director and Treasurer.
He is the first person to be initiated into the (US) Chess Hall of Fame based on his correspondence record of 90 wins, 8 draws and 1 loss.
[4] He was nominated for a vacancy in the Finals because of his excellent performance in the North American Invitational Correspondence Chess Championship II.
The United States hosted the ICCF Congress in Daytona Beach, Florida in September 2000.
It provided an opportunity for the titled US players to meet and play the "Rest of the World" in a special evening chess event.
[citation needed] Attendees included both US World Champions[28] and delegates and friends from 20 nations.