Nominations are invited for the 23rd annual Michelson Postdoctoral Prize Lectureship to be held Fall 2018 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 $1500 plus all travel expenses. The deadline for nomination is April 16, 2018. More details can be found in the March 2018 issue of Physics Today and on the MPPL home page.