Complex sentence: This book (still in print) helped to renew interest in his work, and in early California architecture in general, and in the decades since its publication Irving Gill has come to be recognized as a major figure in the modern movement.
Split into simpler sentences: This book (still in print) helped to renew interest in his work, and in early California architecture in general. In the decades since its publication Irving Gill has come to be recognized as a major figure in the modern movement.