Analysis of information sources in references of the Wikipedia article "Juggling pattern" in English language version.
Apparently [Ron] Graham experimented with many patterns that crossed hands or changed direction in the Mess way, some of which were likely to be close to the current Mess: Steve studied Ron's patterns, and other jugglers as well, including films of Vaudeville jugglers. From this stew, the Mess emerged. Ron and Steve juggled at the YMCA in Morristown, N.J., when the mess was created, but the name "Mills Mess" was given to this trick some years later on the West coast by Ed Jackman, Barrett Felker, and/or Norm Johnson.
Apparently [Ron] Graham experimented with many patterns that crossed hands or changed direction in the Mess way, some of which were likely to be close to the current Mess: Steve studied Ron's patterns, and other jugglers as well, including films of Vaudeville jugglers. From this stew, the Mess emerged. Ron and Steve juggled at the YMCA in Morristown, N.J., when the mess was created, but the name "Mills Mess" was given to this trick some years later on the West coast by Ed Jackman, Barrett Felker, and/or Norm Johnson.