Jack Koselak was born in South Bend, Indiana on May 3, 1933.  He married Anne Lee Gibson on August 22, 1959 who preceded him in death.    He is survived by his brothers Randy (Patti) and Jody (Louise), daughter Karen Klaversma (Don), son Brooks (Janine), grandsons Ethan, and Tim McWilliams (Erika), and great grandchildren Crawford, Ansley Grace and Scarlett.  Also, many nieces, nephews, great nieces and great nephews.

Received his masters degree from Indiana University in 1960 and his doctorate in education from the University of Northern Colorado in 1970.  He worked for Jefferson County Public Schools from 1963 to his retirement in 1993.  Following retirement he volunteered at Craig Hospital in Englewood, Colorado.

After Anne's death he moved to the Concordia Apartments where he made many friends and enjoyed a myriad of activities.  Everyone was curious as to which sweatshirt he'd be wearing with offbeat and irreverent sayings.

He loved travel (wandering away from tour groups and driving on a pedestrian mall in Vienna), dancing, and good food and drink with friends and family.  He had an amazing sense of humor.

There will be no service.  In lieu of flowers, memorial may be made to the charity of your choice.