I have to apologize for my post reply to the original question. After looking through the TFG Design handbook this weekend, I realize this was NOT the source I have used in the past for structural comparison of various species. I actually had a photocopy from another source attached in my book. If/when I find where I got the photocopy from, I will post that info.
Again, hope I did not mislead and I will send back the commission check from TFG.