- E-bookFrom Yauco to Las Marias A recent campaign in Puerto Rico by the Independent Regular Brigade under the command of Brig. General SchwanKarl Stephen Herrman
- E-bookFrom Yauco to Las MariasKarl Stephen Herrman
- E-bookFrom Yauco to Las MariasKarl Stephen Herrman
- E-bookFrom Yauco to Las Marias A recent campaign in Puerto Rico by the Independent Regular Brigade under the command of Brig. General SchwanKarl Stephen Herrman