Flying Machines Today. E-book. Formato PDF William Duane Ennis   -  Forgotten Books, 2017  - 

The suggestion that some grasp of the principles and a very fair knowledge of the current practices in aeronautics may be had without special technical knowledge came almost automatically. If this book is comprehensible to the lay reader, and if it conveys to him even a small pro portion of the writer's conviction that ?ying machines are to profoundly in?uence our living in the next generation, it will have accomplished its author's purpose.

Passages From the Diary of Christopher Marshall: Kept in Philadelphia and Lancaster During the American Revolution; 1774 1777. E-book. Formato PDF William Duane   -  Forgotten Books, 2017  - 

The part of the following work comprising the years 1774, 1775 and 1776 was published in the year 1839, and having met with the approbation of those qualified to judge of its merits, extracts from Mr. Marshall's Diary for the year 1777, are now added. The extracts which I have made for the four following years are sufficient to make a second volume of like size, which, I hope, will one day be laid before the public. The Diary, so far as it at present exists, covers only the eight years from 1774 to 1781, inclusive.