The reference room is OML’s heart, where visitors can access rare, reference, and digital resources. Entry to the reference room and associated spaces is from the library arcade.

The Arthur M. Ryan Reference Room contains the non-circulating reference collection. It also features

• two, specially designed display cases for OML’s substantial collection of early globes; about 40 small, table-top, and floor-standing globes are on display at a time;
• a seminar room, seating 12-15, which is variously used for the consultation of rare materials, small classes, and other meetings; and
• furniture donated by Thos. Moser Cabinet Makers.