A nice touch is the illustrated fold-out poster tucked in the back.
Horological Shop Tools: 1700 to 1900 Signed 1st Edition w/letter and Note 1980
A nice touch is the illustrated page numbers shaped like leaves.
Memmler’s The Human Body in Health & Disease Cohen Hull 14th Ed. Wolters Kluwer
What stands out about this activity book is the mix of puzzles for all ages.