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|View static image|
|Pattern type||Strict still life|
|Number of cells||14|
|Year of discovery||Unknown|
Bookends is the forty-sixth most common still life in Achim Flammenkamp's census, being less common than dead spark coil but more common than elevener. It is also the fifty-third most common object on Adam P. Goucher's Catagolue.
- Achim Flammenkamp (September 7, 2004). "Most seen natural occurring ash objects in Game of Life". Retrieved on January 15, 2009.
- Adam P. Goucher. "Statistics". Catagolue. Retrieved on June 24, 2016.
- Bookends at Adam P. Goucher's Catagolue
- The 619 fourteen-bit still-lifes at Mark D. Niemiec's Life Page