Author Archives: The John Crerar Library

Crerar Library Extended Hours March 10th and 11th

Ahead of Winter quarter finals week, Crerar Library will be open extended hours during the University’s reading period, Friday and Saturday March 10th and 11th. On both days the hours will be 8am – 12am. Service desk hours will remain the same. For hours on other dates or at other libraries, visit

Crerar Library Interim Circulation Hours

In addition to shortened building hours, Crerar Library circulation hours are reduced for the Spring Interim.

Sunday, March 20: Closed
Monday – Friday, March 21- 25: 8:30am-5:00pm
Saturday, March 26: 9:00am-5:00pm
Sunday, March 27: Noon-5:00pm

For other Libraries or Library departments, see for a complete list.

Crerar Library interim hours, March 21-29

Crerar Library will have reduced building and circulation hours for spring interim, March 21-29. 

Sunday – Thursday 8:00 a.m. – 10:00 p.m.
Friday – Saturday 8:00 a.m. – 8:00 p.m.

Monday – Friday 8:30 a.m. – 5 p.m
Saturday 9:00 a.m. – 5 p.m.
Sunday, March 22  Closed
Sunday, March 29 Noon – 5:00 p.m.

For a complete list of hours for all locations and departments, see

Hanging sculpture Crystara temporarily removed from Crerar Library atrium

Image of Crystara

Surrounded by scaffolding, workers prepare to lower Crystara from the Crerar Library atrium.

For the next several weeks, visitors to Crerar may find that the main lobby feels a little emptier than usual. For the past 30 years, visitors to Crerar have walked under Crystara, a 30’ long aluminum and Waterford crystal sculpture by artist John David Mooney. Suspended above users as they made their way to the bookstacks and other library resources, the sculpture was designed to refract the sunlight coming in through the atrium skylight, changing the look of the entire lobby as the sun moved across the sky. Now, in order to repair the roof and replace the glass in the skylight, Crystara has been temporarily taken down.

Over four days, from July 7 to 10, workers lowered, disassembled, and moved the sculpture to the east side of the first floor. Work on the roof is scheduled to be finished mid-September, at which point the workers will return and the sculpture will be returned to the atrium. In the process, the new glass in the skylight should make Crystara gleam like new and help to fulfill the artist’s intention in a way viewers haven’t seen for years. 

After the break, see a slideshow featuring more pictures from the entire process.

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Crerar Library roof update #2: Lobby and first floor furniture removal

Starting on July 2, the next steps in the Crerar Roof replacement will begin with the removal of the lobby furniture, including the benches, chairs, and display cases, as well as the tables on the east side of the first floor reading room. On July 3, computer tables on the first floor will the removed, but will returned as soon as possible. The rest of the furniture will be returned once work has completed. CSIL classrooms and computers, seating behind the reference desk, and reference bookstacks will be unaffected.

The furniture removal is necessary to prepare for work on the lobby skylight. We apologize for the inconvenience. Additional study areas are available on the 2nd, 3rd, and lower levels. Please contact with any comments or questions.

Crerar Library roof update: gravel removal starts June 16

The next phase in the Crerar Library roof replacement project starts June 16th with the removal of the existing gravel on the roof. Work on the east side of the roof is scheduled for June 16th-24 and the west side for June 25-July 3, weather depending. The gravel removal is done via a large vacuum machine that generates a noise similar to an engine; please keep this is mind when settling on an area of study in the library on those dates. Thank you for your cooperation.

Please contact with any comments or questions.

Crerar summer interim hours

Crerar Library building and service desk hours will be reduced for Summer interim, June 14th – 22.

Building hours:
Monday – Thursday: 8am – 10pm
Friday, Saturday, and Sunday – 8am – 8pm

Circulation hours:
Monday – Friday: 8:30am – 5pm
Saturday: 9am – 5pm
Sunday, June 15: Closed
Sunday, June 22: Noon – 5pm

The reference desk will be closed Saturdays, June 14 and June 21. For specific days or the hours for other campus libraries, see Summer quarter hours begin Monday, June 23rd.

Crerar Library roof construction begins May 19

On May 19, workers will begin constructing scaffolding around Crerar Library in preparation for the roof replacement and façade repair. This work may be noisy at times; please be aware of this when planning your work in Crerar. Additionally, the sidewalk along the east side to the north corner of the building will be closed to pedestrian traffic, however both main entrances will remain open.

Full construction will begin on June 16th and is scheduled to continue through the summer until Sept. 26. Further updates on the project will be provided. Please contact co-Director of the Crerar Library Barbara Kern with any questions –

Crerar Library Winter Interim Hours December 14 – January 5

The Crerar Library’s building and service desk hours are reduced for the winter interim.

Building hours:
Sunday – Thursday: 8a – 10p
Friday and Saturday: 8a – 8p

Circulation hours:
Sunday: Closed (except January 5, open noon – 5p)
Monday – Friday: 8:30a – 5p
Saturday: 9a – 5p

Reference hours are unchanged, however the desk will be closed two Saturdays, December 28 and January 4.

December 24th, the building will be open until 5p, and the circulation and reference desks will close at 3p. The library will be closed on December 25 and January 1.

See for full library hours.


Crerar Library Labor Day Hours

On Monday, Sept. 2, the Crerar Library will be open shortened hours for the Labor Day holiday, from 8am-10pm, however both the circulation and reference desks will be closed. Services such as reference assistance, checking out books, or signing in public and unaffiliated visitors will be unavailable until the library reopens on Tuesday. 

For a full list of library hours, see