PG Tait 1:  Peter Guthrie Tait

Courtesy of Scottish National Portrait Gallery

PG Tait 2:  Peter Guthrie Tait

Courtesy of Peterhouse College, University of Cambridge.

PG Tait 3:  Peter Guthrie Tait (detail from portrait)

Courtesy of Peterhouse College, University of Cambridge.

MA Porter, wife of PG Tait:  Margaret Archer Porter (1839-1926)

Courtesy of the Scottish National Portrait Gallery

Lewis Campbell:  Joint biographer of Maxwell, along with William Garnett.

Photograph taken from book about Lewis Campbell: "Memorial in Verse and Prose"

William Garnett:  Maxwell's demonstrator at the Cavendish Laboratory. Garnett was also joint biographer of Maxwell, along with Lewis Campbell.

Courtesy of the Cavendish Laboratory, University of Cambridge.

Fleeming Jenkin: 

Coutesy of The Rt Hon the Lord Jenkin of Roding

EJ Routh 1:  Edward John Routh
 

EJ Routh 2:  Edward John Routh (detail from portrait)

Courtesy of Peterhouse College, University of Cambridge.

William Thomson:  Baron Kelvin (detail from portrait)

Courtesy of Peterhouse College, University of Cambridge.

William Hopkins:  (detail from portrait)

Courtesy of Peterhouse College, University of Cambridge.