Harold J. Rosen, PD, Hon. CSI, CCS, is retired after an illustrious career as a construction specifications writer, which includes serving as a chief of specification for the New York office of Skidmore, Owings & Merrill and as an independent specifications writer. He was awarded the highest honor by the Construction Specifications Institute (CSI) by being named an Honorary Member in recognition for his many decades of pioneering work on formats and practices for construction specifications writing.

Robert S. Weygant, CSI, CDT, SCIP, is owner of Sumex Design, a BIM consulting and development firm located in New Hampshire. He is focused on development of BIM components for manufactured products and systems while promoting the use of new interoperability standards, the integral link between BIM and construction documentation. He has been the national chair of the BIM Practice Group for CSI and a member of the Institute Technical Committee.

Mark Kalin, FAIA, FCSI, CCS, SCIP, LEED AP, is President of Kalin Associates, an independent specification consulting firm in the Boston area. He has been the national chair of the Sustainable Facilities Practice Group of the CSI and president of Specifications Consultants in Independent Practice (SCIP). For the AIA, Mark has served as chair of the MasterSpec Review Committee, and the Specifications Professional Interest Area. For CSI, he has been president of the Boston Chapter and now serves on the national CSI Technical Committee. He has also taught a course on specifications writing at Harvard University's Graduate School of Design.

John R. Regener Jr., SAIA, CCS, CCCA, CSI, SCIP, is an architect and independent specifications writer in Irvine, California, with thirty-five years of experience in producing and applying construction contract documents for commercial, industrial, institutional, and residential projects. Active in CSI education programs and leadership, he is a national leader in SCIP.