The collection originally contained the princess's personal library of Irish literature and Irish-American sheet music.

Since its founding, it has acquired over twelve thousand books, including literature from the Irish Literary Revival as well as classic volumes.

The collection has a selection for young readers, offering books and DVDs for age two and upwards.

The library also hosted at one time a large, detailed, comprehensive and definitive online reference database of Irish writers, but this is now available instead at Ricorso's official website.

[5] In association with the Ireland Fund of Monaco, residential bursaries have been established "to enable literary and academic writers born or living in Ireland to pursue a current project during a one-month residency at The Princess Grace Irish Library in Monaco".