[2] The Waterloo Mechanics' Institute purchased their first books in 1876 and stored them on a table in Town Hall.

[6] She had previously worked as part-time librarian of the free library that had been housed at city hall, a position she began at the age of 21.

[6] By 1948 the library holdings at grown to 17,000 books and Roos, who spent many years working alone, had a full-time assistant.

[7] She retired on August 1, 1949, and was honoured during a dinner held at the Walper Hotel and attended by Waterloo mayor Vernon Bauman.

[10] The library is built into the existing RIM Park Manulife Sportsplex, located in East Waterloo.

[10][11] The Record estimated that "a typical Waterloo household will pay $19 annually to operate the new library".