Nominations were invited for the 23rd annual Michelson Postdoctoral Prize Lectureship to be held Spring 2020 in the Department of Physics, Case Western Reserve University. The prize is awarded annually to a postdoctoral scholar active in any field of physics. The winner will spend one week in residence at CWRU and deliver 3 technical lectures and a colloquium. The lectureship carries an honorarium of $2500 plus all travel expenses. More details can be found on the MPPL home page.