• Front row: Glenn Horton-Smith^[1], Theo Kotseroglou^[2,1], Wolfram Ragg^[2,A], Steve Boege^[2,B];
• Back row: Kostya Shmakov^[3], Dave Meyerhofer^[2], Charlie Bamber^[2,C], Bill Bugg^[3], Uli Haug^[2,D], Achim Weidemann^[3], Dieter Walz^[1], Dave Burke^[1], Jim Spencer^[1], Christian Bula^[4,E], Kirk McDonald^[4], Adrian Melissinos^[2];
• Not pictured: R. Clive Field^[1], Steve Berridge^[3], Eric Prebys^[4], Thomas Koffas^[2], David Reis^[2].

Numbers indicate associated institution at time of collaboration; letters indicate present address.
1) Stanford Linear Accelerator Center, Stanford, California 94309
2) University of Rochester, New York 14627
3) University of Tennessee, Knoxville, Tennessee 37996
4) Princeton University, New Jersey 08544
A) Panormastrasse 8, 78589 Durbheim, Germany
B) Lawrence Livermore National Laboratory
C) Hughes Leitz Optical Technologies, Ltd., Midland, Ontario, Canada