blackkite I found that we have a book for sale ( KOJINSHA, 2007 ISBN 978-4-7698-1337-8. Imperial Japanese Navy Seaplanes. The original name is: 日本の水上機)...I hope I copied it correctly..) This is the first copy of the four books. Can you tell me if there are materials of interest to me (drawings and diagrams) on seaplanes H2H and Southampton-2? In particular, I am interested in detailing. Thanks!