From the front cover:

This spellbook contains all of the maneuvers available to the strategic fighter as well as innate spells for the various races of the realms.


From the back cover:

Contains 61 durable, laminated cards including: 16 Battlemaster maneuvers, 3 totem Barbarian abilities, 19 Monk techniques, all the spell-like racial abilities for the Aasimar, Drow, Firbolg, Forest Gnome, Genasi, High Elf, Tiefling, and Triton subraces.

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Note: while the back may reflect the above...for ease of reference I've also included the numbers (Count - 61) of the count below:

Fighter (Battlemaster) - 16
Barbarian (Totem) - 3
Monk - 19
Aasimar - 1
Drow - 3
Firbolg - 2
Forest Gnome - 1
Air Genasi - 1
Earth Genasi - 1
Fire Genasi - 2
Water Genasi - 2
High Elf - 1 (basically blank)
Tiefling - 3
Triton - 3
Yuan-Ti - 3


RPG: Dungeons & Dragons (5th Edition)