1895 by-law that creates the Arnprior Public Library

1895- 1967 From Mechanics' Institute to Public Library located in the Arnprior Town Hall, Elgin Street

1967-1991 Centennial project brought the library into the DA Gillies Building with the museum created on the second floor

1990 - present. Construction began in 1990 with the official opening in 1991. Expansion into the lower level was started in April 2010 with official opening ceremony in October 2010.

In 2017, the library replaced original carpeting and HVAC with support through the Canada 150 Community Infrastructure Program/Avec l’appui du Programme d’infrastructure communautaire de Canada 150.