My mind haz been wondering

And no smart ass remarkz pahleez. While surfing FCBO yesterday evening I went on the electrical site and then I harkined back to my build on the Batwagon. One thing I did on that build was splice it a blade type fuss block from ah mid '80s LeBaron 'cuz the old Buss fuss block waz toast and then I thought, I wonder when Mother stopped using the old bar type inch long buss fusses? I had no answer. Anybody have an accurate answer for this Ole Dawg? Late '60s? Somewhere in the '70s? Newest FSM...

My mind haz been wondering