A few months ago, Rlumpkin, you requested a photo of John Preston. I responded with the only image I had of him, which was pretty dreadful. Here is an upgraded version.
This shows Preston with the Castle Park High School Trojans of Chula Vista, California.
John Preston would move up to become a non-roster invitee with the San Diego Padres in 1969.
John Preston Register Statistics & History | Baseball-Reference.com