1958: His senior photo in Chicago's Carl Schurz High School yearbook.

1978: Shortly after being hired at the P-I, still carrying a lot of Chicago attitude.

1980: By now, he had become a bigtime columnist.

1981: Jon's clothes finally reflect styles of the '70s, and he grew a beard.

1983: No tie and flannel plaid: The columnist is now a PACIFIC Northwesterner.

1984: Need we say more?

1986: As we were saying a couple of years ago ... .

1987: Jon, for some reason, seemed to find it difficult to smile at this photo session.

198? In the late '80s, Jon became tired of his beard.

198? So, one day he shaved it off. What human drama!

1993: That experiment really didn't last all that long.

1994: Note the snazzy corduroy sport jacket Jon dons for the '90s.