Chinese leaf found in a book

[Lu]

My boyfriend works in an antiquarian bookstore, he sends me regular pretty pictures of Very Old Books and occasional questions. Today he asked me for more information on the attached image. It's printed (not calligraphed) using a wood stamp, on Chinese paper, and it was cut in four at some point to use in binding another book (a Dutch book on caterpillars and butterflies).

 

As far as I can read it says 天源號. Does anyone here happen to know what that means? And can anyone read the three seals? There's no rush, but any information is appreciated.

[Publius]

The round one, 生生不已?

The square one, X源而來? (On a second thought, 源源而來?)