The Brave And The Bold #99, January 1972
As a kid, my first thought on any Flash team-ups was this: He needs to join forces with someone with actual super powers, otherwise he will end up running circles around his partner.
Sure enough, on this page, he proves the point showing off his super speed to the worlds greatest, but definitely not fastest, detective. (I assume Batman is — wait for it — a speed-reader.)
Bob Brown pencils (pretty much layouts only) the action here, and Nick Cardy provides the inks, which means the art looks like… Nick Cardy.
This of course is consistent with his very specific embellishment style. Almost anything he inked looked like he had penciled it as well. Which, considering he was a terrific penciller, is ok with me.
Fun Fact: Jim Aparo takes over as permanent artist for The Brave and Bold series with the following issue (#100) and pretty much draws the next 100 issues. Whew.