USCF started keeping event records on their website in 1991. The Seattle Chess Club recently crossed the mark of having 1000 events in the USCF records which are on the website.
CLICK HERE for the crosstable of event number 1000. There are really 1001 events as of May 3, 2015
CLICK HERE for event 1001. Note Section A quad was rather strong and another quad had all the games end in draws.