Help With Well Written And Historically Accurate Biographies

There is a terrific biography of Teddy Roosevelt by Douglas Brinkley, a professor at Tulane. Very well researched and written.  The book is entitled "The Wilderness Warrior: Theodore Roosevelt and the Crusade for America".

It makes you wish you knew and could chat with this great, though quirky, President. 

I will preface this with an admission of bias as the author was my uncle, one of the most talented and accomplished individuals I've ever known.  They were not widely published but can be found on Amazon and others, and if either of these subjects interest you at all I would highly recommend giving them a chance.

Katherine Anne Porter and the Art of Rejection

The Worlds of Truman Capote  

Both written by William L. Nance

Grant  by Ron Chernow and for that matter Grant's own autobiography, Personal Memoirs of Ulysses S. Grant.

Though more recent than you asked for, the indispensable book for understanding the life and work of Alfred Hitchcock: Alfred Hitchcock: A Life in Darkness and Light by Patrick McGilligan. FWIW he was born in the 19th century.

Edison: A Biography by Matthew Josephson. Or this one - Titan: The Life of John. D. Rockefeller Sr. by Ron Chernow. I see that Grant  by Ron Chernow is already mentioned and indeed,  Ron Chernow is one of the most recise and relevant biographers.

Ron Chernow list of books - winner of the 2018 Tribune Literary Award
A chat with Ron Chernow, America's biographer, non-biased expert in custom writing

Edit: Ron Chernow is one of the most precise and relevant biographers. (typos - p)

I really enjoyed, "Undaunted Courage: Meriwether Lewis, Thomas Jefferson, and the Opening of the American West", by Stephen Ambrose.