The following articles contain biographical information about Jerry Stark.

Not Your Picnic Croquet Match in San Francisco Chronicle
John Taves and Jerry Stark in Croquet World Online
2006 MacRobertsion Shield Players by Australian Croquet Association
2007 Resort Invitational Players by Tremaine Arkley
Croquet in Solano Magazine
Meadowood Croquet Pro Makes History in Maui Croquet Club News

There are also a video clip.

California Wine Country: Croquet Lesson in Travel Channel

There is also a picture gallery of Jerry Stark.