Low Beams and Highbeams both went out

I had a similar thing happen tonight with my 67 Dart about a mile out of town and noticed my low beams going out just for a split second, stopped for ice cream, got to the edge of town, then the low beams would go out for a full second or so, tail lights were still working, ended up driving home with the high beams. Thoughts? I had a 72 Fury that the headlights would go out ended up changing both the headlight, switch and dimmer but it was so long ago that I don't remember which one fixed it.
No pictures of low beams, please.
sorry, don't mean to hijack the thread.