Wisconsin's Champion Trees - A Tree Hunter's Guide, Second Edition by R. Bruce Allison with Photographs by B-Wolfgang Hoffmann and Foreword by Dick Rideout. Trees are dynamic, growing and dying, within an ever changing environment. New trees have replaced many fallen champions. Although R. Bruce Allison and his associates have worked hard to revise old records, there are many grand trees still to be found. A champion tree is the largest recorded tree of its species. Champion trees have been officially recorded in Wisconsin since 1941. Wisconsin's Champion Trees book contains the location and measurements of 153 species of Wisconsin champion trees. It is published as a guide and a challenge to all Wisconsin big-tree hunters to find and nominate new record trees.