Peter Brighouse's Cat books for children and adults of all ages. Eleven books published.
Printed versions in A5 softback available over ebay (seller squimps or Mr Squimps Shop), over Amazon (Mr Tiggers Shop) or direct from the Brighouse Family, which interestingly enough is the cheapest!
Kindle versions available through Amazon from $1.99 each (about £1.30) or borrowed free by Amazon Prime customers. Watch out for Special Promotions, five days in each 3 month period when the books can be purchased for free. Certain small stories are on Smashwords as ebooks.