Erik M. Buck founded EMB & Associates, Inc. in 1993 and built the company into a leader in the aerospace and entertainment software industries by leveraging the NeXT/Apple software technology that would later become Apple’s Cocoa frameworks. Mr. Buck has also worked in construction, taught science to 8th graders, exhibited oil on canvas portraits, and developed alternative fuel vehicles. Mr. Buck sold his company in 2002 and currently holds the title of Senior Staff at Northrop Grumman Corporation. Mr. Buck received a B.S. degree in computer science from the University of Dayton in 1991 and is a frequent contributor to Cocoa mailing lists and technical forums.

Donald A. Yacktman has been using Cocoa and its predecessor technologies, OpenStep and NextStep, professionally since 1991. He coauthored the book Cocoa Programming and has contributed to the Stepwise website as both author and editor. He has worked for Verio/iServer and illumineX in the past. At present he works as an independent consultant assisting in the design and implementation of Cocoa and iPhone applications. Mr.Yacktman received B.S. and M.S. degrees in electrical and computer engineering from Brigham Young University in 1991 and 1994, respectively.