Encyclopedias, Almanacs, Transcripts, and Maps
- Acquisition
- Acra, the
- Acraba
- Acro, Pseudo-°
- Acrostics
- Acsády, Ignác
- Act of Settlement, Irish
- Act, First
- Acta Apostolicae Sedis
- Action and Passion
- Action at a Distance
- Action Française
- Action Française
- Active Life, Spiritual
- Acton, Charles Januarius
- Acton, John Emerich Edward Dalberg
- Acts of the Martyrs
- Acts, Notional
- Acuña, Cristóbal de
- Aczél, Tamás