Oliver Hart at SIOE 2017.

SIOE 2017 at Columbia University.

Douglas Allen at SIOE 2015.

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

Yan Chen at the Toronto conference.

Yoram Barzel and Harold Demsetz at ISNIE 2015.

Chris Blattman delivering his keynote lecture.

Lisa Bernstein and Robert Ellickson in conversation.

Celebrating a milestone at SIOE.

Vernon Smith delivering his Presidential address.