Since 1920 Delta Lumber Company has been providing high quality Lumber, building Materials, and Hardware to Home Builders, Remodelers, and Home Owners in the Northern Maryland and Southern Pennsylvania area. Since June of 1978 Delta Lumber has been a Member of Do-It Best Corporation.

Do it Best Corp., formerly known as Hardware Wholesalers, Inc. (HWI), is a member-owned hardware, lumber, and building materials cooperative based in Fort Wayne, Indiana. Do it Best Corp. is the second-largest co-op in the industry with sales of $2.68 billion in FY 2012. This long held association gives Delta lumber the buying power of a much larger store as well as the ability to offer top quality Do-It best private label products.