That won't be the case on Friday, July 21. That night, stuffed animals will also be in the building, ready to play.
Its revival was prompted by a young library patron who asked when her stuffed animal could spend the night.
"This is the first time I've done it. It's back by popular demand," she said.
Although lighthearted, the program does have a couple of more serious purposes.
"For parents, it's a good way to prepare young children for their separation anxiety before they go to school," she said. "For kids, it's a workout for their imagination, thinking what could happen in the library when it's closed."
Owners can drop off their stuffed animals between 10 a.m. and 6 p.m. on Friday, July 21.
The stuffies will spend the night in the library and reunite with their owners at a continental breakfast at 9 on Saturday morning.
At the breakfast, Kennedy will give a Power Point presentation showing the stuffies' activities on Friday night and early Saturday morning.
"There will be photos of the hijinks the animals were up to when the library was closed," she said. The photos will be the only records of the stuffies activities, she added.
Owners who cannot make the breakfast will be able to claim their stuffed animals at the library's circulation desk.
Since the stuffies will make their own plans once the doors are locked and lights turned out, Kennedy was unwilling to predict on the night's activities. She would, however, mention some of the possibilities.
"They might be racing book carts and reading thrillers," she said.
Those books are favorites of her stuffie, Mortimer Chipmunk, Kennedy said. Mortimer, a stuffed hand puppet, spends most of his time on Kennedy's desk, coming out when she has programs for young children.
He came with her from Baltimore and might be mistaken for the former mascot of Goucher College, although Kennedy is certain he’s a chipmunk and not a gopher.
Whatever the style, the stuffies may be found reading throughout the library, she added.
"Their activities will depend on the agility of the stuffed animals," she said.
Any size stuffed animal is welcome, although huge ones should stay home.
"If it can be carried in by one person, it can stay," Kennedy said. "We can't really accommodate an eight-foot-tall Teddy bear."
The last time the library hosted the activity, more than a dozen people brought their stuffed animals to stay the night.
"We already have people signed up for it," she said of this year's program, "but people don't have to sign up in advance."
The program is intended for young children, but if an adult wants to bring in a stuffed animal, "we won't turn them away," Kennedy said.