Anything Be Bop from Wes Montgomery to early Miles Davis records are a great source of walking basses.
The names have been mentioned, but strangely Charlie Mingus has been forgotten just like NHOP (Niels-Henning Ørsted Pedersen)...
If you want some electric bass, then Alain Caron and Kyle Eastwood are amazing bass walker (nice name, I think), just like Tom Kennedy.
There are so many great albums, but I would recommend one in particular as it features the late extraordinary Chet Baker in a terrific mood, alongside an amazing Jean-Louis Rassinfosse on double bass and the always musical guitar chord changer Philip Catherine : Crystal Bells.