Luck:
You can get 1 from doing some quest. You can get another 1 by holding an item, like shady mirrors in Fo2 with gave +1 CHA.
In addition to it you can gain 1 STR, 2 END, 1 CHA + 3 additional STR from PA.
Books:
They seemed limited from merchants and in overall, they're kind of rare.
Drugs...