Bishop sacrifices on h7
A classic sacrifice, white begins with Bxh7 check and, following ...Kxh7, often follows with Ng5+ and Qh5. Here are nearly 150 games in which the sacrifice is played, and more than dozen have annotations! Observe when the sacrifice works, and, when it doesn't.
Morphy's Games of Chess, Philip Sergeant. A wonderful book for a student interested in playing through these magnificant games.