In the opening scene where Pam is attending a CFL football game in Vancouver, the players are seen using a CFL Wilson Football. In 1989 the Spalding J5V was the football used at the time. The CFL did not use Wilson until 1995
When Pam is looking at Roger's Labatt card, it shows his office's address as being in Montreal, Ontario. Montreal is in fact in the province of Quebec, not Ontario.