Mark Collins served as the first lecturer and coordinator for the Environmental Studies Program in the Department of Geology and Environmental Science at the University of Pittsburgh. He is the author of several books, including Wayward Tracks (In Extenso Press/ACTA Publications).
The late Margaret Mary Kimmel was professor in the Department of Library Science at the University of Pittsburgh. She co-authored For Reading Out Loud: A Guide to Sharing Books with Children and was a consultant to Family Communications and Fred Rogers.
David Newell (Foreword) is an American television actor known primarily for his portrayal of Mr. McFeely, the delivery man on Mister Rogers’ Neighborhood, and worked in the public relations department of the Fred Rogers Company. His character’s most famous catchphrase was "Speedy Delivery!" He toured the country until he retired in 2015, promoting Mister Rogers’ Neighborhood as Mr. McFeely.