Google has been running a project to scan and publish a range of books freely online.  It has drawn objections from copyright holders – but it’s a useful resource for research.   The objectives of the Google Books Project are
The Google Books project per se involves digitizing library collections to provide searching for in-copyright works with fair use snippets and free access to out-of-print works.

Each book has been partially scanned with the missing pages marked.

We took a quick browse around the site and have found the following rowing books:

• Rowing Faster by Volke Nolte
• Rowing Training, Fitness, Leisure by Wolfgang Fritsch
• Skillful Rowing by Edward McNeely and Marlene Royle
• Rowing by Niels H. Secher and Stefanos Volianitis – reproduced below but it omits everything after page 40.