I found this pack in mid-July on Kemper across from Lincoln School in Lincoln Park.

It was under a car in the street and its contents were strewn about as though someone had rifled through it and tossed what he/she did not want. It's a gray Timbuk2 backpack with several unique contents. I am not posting an inventory; any callers/respondents can verify ownership by naming some of the things. 

If you can please pass this along to the appropriate message boards, bike shops, and cyclists in town, I hope with your help to get this nice bag back in the hands of its owners.