The "Billy the Kid" look alike 2 rows back over the left shoulder of the bowtie is Bertrum holding a 1911 pointed at his neighbor Amarillomike in the dead center back row.

There's clearly one '97 thumb guillotine in the mix. Probably 2 more autos or pumps too.

Notice how most of the guns are pointed toward the guy on the right, second row? That's Rudolph Hess, captured the first time when he flew solo to Texas, but couldn't remember why.