1. Gregory Clark (1892-1977), the Canadian journalist and humourist. He IS the author of "Grandma Preferred Steak", if that ever shows up.
The entry for "May Your First Love Be Your Last" has the wrong Amazon Product Description and cover image!
2. Gregory Clark (1936-), former Australian diplomat and vice president of Akita International University
3. Gregory T. Clark, art history professor and scholar
4. Gregory Clark (1950-), professor of English at Brigham Young University
5. Gregory Clark (photo)is chair of the economics department at the University of California, Davis. He has written widely about economic history.