13 books
The Journal of the Franklin Institute
A Text-Book of Elementary Chemistry Theoretical and Inorganic
Röntgen Rays
Half Hours With Modern Scientists
The Journal of the Franklin Institute, Vol. 99
Rontgen Rays
The Journal of the Franklin Institute, Vol. 98
Roentgen Rays
Memoir of Henry Draper
A Text-Book of Elementary Chemistry
The Correlation of Vital and Physical Forces
Memoir of John William Draper 1811-1882