Reliable Office Solutions is your one stop shop. We have one of the largest selections of office supplies, equipment and services. Originally founded as Riverside Office Supply in 1932 in downtown Riverside, Jeff Eshelman purchased the company in 1984. Jeff immediately began enhancing the company’s office supplies and stationary products with a program of office equipment. This included sales and distribution, document management solutions, and full-line office equipment repair and service by factory trained technicians.