This Yard Long framed photograph (46 inches long) from the very first ARRL Convention held in Chicago, Illinois in 1921.
Photo taken by F.P. Burke of Chicago. A few of the attendees are wearing their call signs on their suits and I have provided a few close ups of those.

A group photo! Lots of suits and ties, typical for the day, a well dressed group!

The First National American Radio Convention

8EA: George A. McIntosh of Detroit, Michigan

8OZ: Robert C. Leacock of Detroit, Michigan

8ZA: Charles J. Murray of New Philadelphia, Ohio

8ZZ: Clyde E. Darr of Detroit, Michigan (famous QST Cover Artist)

Does anyone have one of these convention medals?

Photos & Info N2BTD Collection