MORE UPDATES, ANOTHER CORRECTION, AND MORE THANKS! We now have double confirmation that this man, 1st on the left, is Ricardo Uribe Escobar, a prominent Liberal politician, lawyer, writer, and editor.

Also, in an earlier comment, we misidentified this man, 11th from right as Alejandro Galvis Galvis, a Liberal politician and journalist from Bucaramanga. We now have confirmation from a family member and another commenter on this blog that he is actually Pedro Olarte Sañudo, an important Liberal businessman and mayor of Medellin.

THANKS to Andrés Restrepo, Jorge Julián Restrepo, and Camilo Alvarez Olarte for this important contribution!