Inner Secrets of Card Magic More Inner Secrets of Card Magic (signed by Dai Vernon) Further Inner Secrets of Card Magic (signed by Dai Vernon) Scarne on Cards (signed by John Scarne)
Some original issues of Rusduck's The Cardiste
Some original issues of Stars of Magic Pure Effect
Royal Road to Card Magic The Expert at the Card Table (several editions) Modern Coin Magic (1st edition)
...and a load more bits and pieces. I'm hoping The Magic of Fred Robinson and The Castle Notebooks will be the next additions.
I have not read them all. Some of them are for research purposed (The Potter Index, for example). But I do know what's in them and where to go when I need to find something. I would take a photo of the library (for the gentleman who claims he needs to see it to believe it) but the library has already spilled out into two more rooms! I'm proud of it. I stopped cataloging at about 1700 titles and need to update my list!
I really cannot advocate the importance of building a strong library. And know this, books go up in value. Take care of them and they will always be an asset - in more ways than one.