Robert Plummer

EDWARDSVILLE, Ill. — R.P. Lumber, a family-owned, full-service retail home center and building materials supplier, will open its 89th retail location at 3200 Broadway in Quincy on April 7. “We’ve always wanted to have a store in Quincy, and we’re thrilled to finally have the opportunity,” Robert L. Plummer, CEO of R.P. Lumber, said in a…