On Fri, 23 Dec 2016 20:15:38 -0600, Mark Lloyd
wrote:

I've never seen a lamp with a foot switch.

They were pretty common years ago here. You can still buy the
switches.

http://www.mylampparts.com/Departments/SWITCHES/PUSH-BUTTON-SWITCHES/METAL-TWO-CIRCUIT-PUSH-BUTTONS.aspx