You must like your trumpet players?I'll take Roy Eldridge and Diz any day of the week.
My choice would be Chet Baker and I only came across him through an affiliation to the music of Gerry Mulligan who's, in my opinion, best work was with Baker.
Regarding the photo, it's from a set of photos entitled 'A day out in Harlem', where the photographer, from Esquire magazine, gathered as many jazz musicians as possible in the New York area with intention of photographing them for an artical and posterity.
Anyone interested in music, of any kind, it's on line and worth a gander.
There is also a DVD of the occasion, taken from 8mm film shot by one of the musicians.