Mark Johanson is an experienced home improvement, woodworking and gardening writer and editor. He has collaborated and directed the production of more than 400 do-it-yourself books, including over 75 under the BLACK+DECKER(R) brand. He has also written numerous magazine and online articles on DIY topics. He lives in Saint Paul, Minnesota. Philip Schmidt is an avid environmentalist and a home improvement expert who has written many successful DIY books, including Build Your Kids a Treehouse, The Complete Guide to Patios, and The Complete Guide to Contemporary Sheds.