Brian's got all the great info as always! If it is of any interest there is a whole section in this book about the OR&L's motive power and what happened to it on pages 287 - 333. Regarding steam locomotives we also have two plantation steam engines, WACo 6 (0-6-2T) & Ewa 1 (0-4-2T (with auxiliary tank)). Not used by the OR&L by note worth in the collection.
Regarding our book sale, we still have books available and if you're looking to order one and receive it by Christmas you'll need to order by Sunday, December 13th. One of our volunteer's has also offered to start making and including a free railway themed cotton face mask with each order.