Many of you will no doubt be already well of aware of this, but some might be surprised just what you can find in the Google Books feature. Here's just a few things:
Breviarium Ambrosianum (1830)
Breviarium Parisiense (1736)
Breviarium Parisisense (1836)
Breviarium Sacri Ordinis Praedicatorum (1850 - Pre-Pius X edition with mediaeval Dominican psalter)
Breviarium ecclesiæ Rotomagensis (1777)
Breviarium Sacri Ordinis Cartusiensis (1717)
Breviarium Canonicorum Regularium Ordinis Praemonstratensis (1786)