Richard M. Casella. President, Principal Architectural & Engineering Historian. Mr. Casella has a MS degree in Historic Preservation and 30-plus years of experience in the field. As a private consultant and employee of several prominent engineering, architectural, and cultural resource consulting firms, he has completed more than 200 historic property projects in 24 states. With additional education and training in science and technology, he specializes in engineering, industrial and maritime historic resources.