Autobiography of Charles Biddle: Vice-President of the Supreme Executive Council of Pennsylvania; 1745-1821. E-book. Formato PDF Charles Biddle   -  Forgotten Books, 2017  - 

Page 41, line 22,for 1763 read 1768. 110, third line from foot, for Sanderson's read Simpson's. 135, line 6, for Cartaret read Carteret.

The Way of the Eagle. E-book. Formato PDF Major Charles J. Biddle   -  Forgotten Books, 2017  - 

In order that any one who may chance to read this book of letters may better understand the detailed descriptions of fights in the air which it contains, cer tain fundamental facts of a more or less technical nature should be at all times kept clearly in mind.