I was assuming the city drone typed the wrong date.And assuming that the date on Buk's letter to Burnett is accurate. It would be strange though if he wrote 1954 instead of 1955 by mistake...
Either way, it's odd. Because so much hinges on that 1955 date...quitting the post office then trying to get rehired (after what we assumed was the date of the hemorrhage), getting married, starting to write more poetry...a lot of "shit, I almost died" kind of stuff. And in May of 1955 (the date of the collection letter) he was probably still at the Westmoreland address.
Anyway. If it's 1954 it's 1954. I like throwing monkey wrenches into the works and making it necessary to re-evaluate other things.
Otherwise we would just read Neeli and Sounes and go, "Well, they're the experts, I guess that's how it was!"