The people in order of appearance, from left to right, are:

Leroy G. Flamm
Mike White
Don Gladden
Tim White


Additional information from Mike White (January 21, 2009):

 
If you look at AstroBugs Newsletters you will find a picture that matches
the guy wearing the red shorts, Don Gladden! You can also find a map that
will take you to his house at:
 
59400 Nine Mile Rd.
South Lyon, Mi.
 
(I forget the zip code)
 
But if you look at this photograph, you can see the house number (home to
New Image Software, check the Arcadian)!
 
Besides Don, I'm the one holding a glass of lemonade, my brother Tim is the
one with the beard (author of Lizzard Lunch, Parashot, Carnival Rapture, and
co-author of Treasure Hunt, all of which can be found on Niagra Bugs Club
Tape, even though the tape was never really official, and the tall elderly
gentleman on the left is Leroy G. Flamm! This is perhaps the only photo of
Leroy to be found anywhere outside his immediate family. Leroy was only at
Dons house three times, 1983 (at the Astro Bash), 1985 (with the PenMan and
his hommade EPROM burner), and in 1988 (with the ZGRASS add under)! My
brother Tim was NOT at the AstroBash, nor did he accompany me in 1988.
Therefore, this picture was taken during the July 4th weekend 1985!

On this day, I gave Leroy an AstroBasic and started him toward engineering the
tape interface for Music Maker! He gave me his spare EPROM burner board which I
had to get parts for and even send it to him in Pa. before it worked, (it's
the one photographed at the 2002 CCAG and appears on BallyAlley.com. Right
after this picture was taken (by Peggy Gladden I believe, it had to be her
or Lois Flamm) Leroy journeyed on to "the windy city" and met Stanley
Kendall and John Perkins! This is where John told Leroy about the third
start in BRB that gave Leroy the idea of putting Blue Ram Utility (which is
partially written in Basic) physically into a game cartridge, voiding the
need for the tape recorder, and thereby inventing "Basicarts" as Ken Lill
would later name them.