History Established in 1895 to serve the needs of lumbermen, PLM has grown to be America’s oldest and largest lumber mutual insurance company for the wood products and building material industries. About You Are Here: Home / About / History The History of Pennsylvania Lumbermens Mutual Insurance Company (PLM) We take great pride in our heritage. From our roots in the burgeoning retail lumber industry and as one of the first lumber mutuals, we are an American success story as the oldest and largest lumber mutual in the country today. We are grateful to our founders, policyholders, producers, and employees for contributing to our longevity and helping PLM to not only survive for 125 years, but to thrive. True to our Heritage Armed with foresight and a commitment to our founders’ mission, PLM stayed true to our heritage to provide superior insurance products and services to the lumber industry, becoming America’s last remaining lumber mutual. PLM has grown and expanded geographically over the years and provides protection for some 5,000 wood-related businesses nationwide. View PLM Timeline Pennsylvania Lumbermens Mutual Insurance Company One Commerce Square 2005 Market Street, Suite 1200 Philadelphia, PA 19103 Toll Free: 1.800.752.1895 Fax: 215.625.9097 CustServ@plmins.com About Products & Services Claims Producers Loss Control Center Blog Careers Newsroom Contact Us Subscribe to our newsletter Legal Privacy Policy Sitemap Ⓒ 2021 PLM. All Rights Reserved.