Apparent Concept: Earth Generations.
Pictured: (left to right) The Bat-Man from 1938 (Bruce Wayne), Supergirl (Kara Kent), Knightwing (Clark Wayne), Batman in the 80s (Bruce Wayne, Jr.), Superman from 1938 (Clark Kent), Joel Kent.
Sources: Superman & Batman: Generations (1999), Superman & Batman: Generations 2 (2001), and Superman & Batman: Generations 3 (2003).
Analog: The world of Generations was designated as Pre-Crisis Earth-3898 in Absolute Crisis on Infinite Earths (2006).
Comments: The three Generations limited series were written and drawn by John Byrne. The series follow Superman and Batman and their respective families from their first meetings as kids to the future. Here's a good article on the series, including a family tree.
The first appearance of the Generations universe is actually a crossover with Marvel: Batman & Captain America. The epilogue has Batman and Robin rescuing Captain America from the ice in the 1960s. The Robin depicted has red hair, suggesting he is the Bruce Wayne, jr. Robin from Generations.