The Círculo Eça de Queiroz (CEQ) has a Library with approximately 4,000 books, all properly cataloged. Currently, a process is underway to digitize its collection.
In addition to various editions of Eça de Queiroz’s Works, the Library also includes numerous books by other authors, among whom the following stand out:
- Alexandre Herculano
- Antero de Quental
- Camilo Castelo Branco
- Conde de Sabugosa
- Fernando Sabóia de Medeiros
- Fialho d’Almeida
- Guerra Junqueiro
- Joaquim Paço d’Arcos
- Oliveira Martins
- Pinheiro Chagas
- Ramalho Ortigão

Books donated to the Círculo are displayed for a period before being cataloged and archived. Members may borrow books upon request.
The CEQ Library provides its members with a computer with Internet access.
In addition to its own collection, the Círculo also houses the Dr. Baltazar Rebelo de Sousa Library, held on loan at the CEQ. This private library, consisting of approximately 1,000 books, has been fully digitized by PORBASE – National Bibliographic Database and covers various thematic categories, including:
- Art
- BioSciences
- Social Sciences
- Law
- Economy
- History of Portugal
- World History
- Industry
- Foreign Language Literature
- Portuguese Language Literature
- Politics
- Religion
- Overseas Territories
It can be accessed through the following link: http://porbase.bnportugal.pt/