Crahan, Jack "J.B." Bertsch the retired Chairman and C.E.O. of Flexsteel Industries, passed away peacefully on November 19, at 8:17 p.m. at UnityPoint Health-Finley Hospital, Dubuque, Iowa. A Mass of Christian Burial will be held Saturday, November 28, at 10:30 a.m. at St. Columbkille Catholic Church, Dubuque, Iowa. To celebrate Jack's life, family and friends may call from 2-7 PM Friday, November 27, at St. Columbkille Church. Burial will be in Mt. Olivet Cemetery with full military honors accorded by the Dubuque Marine Corps League. The Egelhof, Siegert & Casper Westview Funeral Home and Crematory, 2569 Kennedy Road, Dubuque, Iowa is in charge of the arrangements. In lieu of flowers, memorials may be given to St. Columbkille Church and St. Columbkille School Fund.