Pablo Spiller and Eric Brousseau at SIOE 2018.

Friends and colleagues at the 2009 conference.

Animated discussion during the 2009 conference.

SIOE conference moments.

Josiah Ober receiving the North Award.

SIOE 2019 conference.

Bengt Holmstrom (MIT) during a panel discussion at SIOE 2017, held at Columbia University.

Helping hands at the SIOE conference.

SIOE conference moments.

Past presidents of SIOE.