So it goes like this:
April 1997: Arthur Levine and scholastic bid on the rights for the American version of Harry Potter.
July 1997: Philosopher's stone published in UK.
October 1998*: Sorcerer's Stone published in US.
*according to my 1st edition copy, not the interview. I think my mom got my copy sometime around September 1998, so a little over a year after it came out in England. And wow, but is my book showing every one of those 7+ years.