There are 3 books in the Clockwork Calico series. The newest book is The Airship Race which came out in 2016.

1
The Golden Owl

Book cover of The Golden Owl
Calico Cogg is a cat like no other. Rescued from the streets of Ticswyk by esteemed inventor Lionel Cogg, she has been fitted with implants to enhance her natural feline abilities. When Lionel is kidnapped, Cali must put her skills to the test to free him. Dark schemes are in…
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2
The Enchanted Obelisk

Book cover of The Enchanted Obelisk
A new exhibit featuring Egyptian artifacts uncovered by renowned Egyptologist Carter Porchester has arrived at Ticswyk’s museum. It’s the talk of the town, and tourists have flocked to the city to view this rare collection. Cali, the clockwork calico cat, is among the privileged few to receive a tour given…

3
The Airship Race

Book cover of The Airship Race
For the first time ever, the city of Ticswyk is hosting its very own airship race. The winner will receive a prize that any tinker would covet—the chance to have his or her airship mass-produced. Lionel is determined to win, spending night and day preparing the finest engine ever built.…