The Hawaiian Railway Museum at Ewa, Oahu, HI should have some information for you. Follow the link below. #s 15 & 19 were wartime aquisitions by the Oahu Railway and Land Co. on Oahu, and operated there until 1972 or '73 when the last of the industrial trackage in Honolulu was removed. A Plymouth diesel, #45 was obtained in the 1950's and is now in service on the Lahaina, Kaanapali and Pacific at Lahaina on Maui. The LK&P, BTW uses the whaleback tender from KRR #11 with one of its 2-4-0s.
Regards,
Ed