Madison Area Bus Advocates
Madison Sand & Gravel Co., Inc.
Manitowoc County Highway Department
Marathon County Highway Department
Marinette County Highway Commission
Marquette County Highway Department
Marshfield Area Chamber of Commerce & Industry
Mashuda Contractors, Inc.
Mathy Construction Co.
Mattison Contractors, Inc.
McCabe Construction, Inc.
Mead & Hunt, Inc.
Mega Rentals, Inc.
Meigs, LLC, Henry G.
Metro Strategies, Inc.
Metropolitan Interstate Council
Metropolitan Milwaukee Association of Commerce
Midwest Food Products Association
Miller-Bradford & Risberg, Inc.
Milwaukee County Transit System
MKE Iron Erectors, Inc.
Monarch Paving Co.
MSA Professional Services, Inc.
Musson Brothers, Inc.