To read of Adams’ lengthy separation from her family, her difficult travels, and her constant battles with illness is to fell intensely how harsh life was even for the so-called aristocracy of Revolutionary times.
(A) To read of
(B) Reading about
(C) Having read about
(D) Once one reads of
(E) To have read of
Authors bio is coming up shortly. 
A. Parallel construction
B
(A) To read of