About Us Lehman Monument Company is a full service monument company. Lehman Monument Company is a family owned and operated business, established in 1987. We provide sales, services, design, and installation of quality memorials of various sizes, shapes and colors. Our experienced staff, state of the art technology and inventory of granite memorials, gives our customers a variety of choices and prices. We have thousands of different designs that can be customized to the customer’s personal choice. We are the premiere provider of memorials in the Northeast Pennsylvania area.