Mark Twain's Mark Twain's Letters ? Volume 5 (1901-1906) is a collection of correspondence written during the early 20th century, capturing a pivotal period in the author's life. These letters showcase Twain's transformation from a humorous storyteller to a reformer addressing significant social and political issues of the time, such as the Philippine-American War and the assassination of President McKinley. Through these writings, readers gain insight into Twain's friendships, thoughts, and the personal challenges he faced alongside his public life.
In the early part of this volume, Twain adopts a more serious tone compared to his earlier works. The initial letters, mostly addressed to his close friend Rev. Joseph Twichell, reveal Twain's candid perspectives on societal issues, his health, and the struggles his family endured, particularly his wife’s declining health. He reflects on experiences such as his return from Europe, his involvement in social reform, and the impact of various events on his worldview, sharing personal philosophies and anecdotes along the way.
These letters blend humor, personal introspection, and philosophical insights, offering a deeper understanding of Twain not just as a writer but as a significant figure in American cultural discourse. This volume provides a compelling and heartfelt narrative, shedding light on Twain's later years and the social values he championed.

XL. LETTERS OF 1901, CHIEFLY TO TWICHELL. MARK TWAIN AS A REFORMER. SUMMER AT SARANAC. ASSASSINATION OF PRESIDENT McKINLEY.
XLI. LETTERS OF 1902. RIVERDALE. YORK HARBOR. ILLNESS OF MRS. CLEMENS
XLII. LETTERS OF 1903. TO VARIOUS PERSONS. HARD DAYS AT RIVERDALE. LAST SUMMER AT ELMIRA. THE RETURN TO ITALY.
XLIII. LETTERS OF 1904. TO VARIOUS PERSONS. LIFE IN VILLA QUARTO. DEATH OF MRS. CLEMENS. THE RETURN TO AMERICA.
XLIV. LETTERS OF 1905. TO TWICHELL, MR. DUNEKA AND OTHERS. POLITICS AND HUMANITY. A SUMMER AT DUBLIN. MARK TWAIN AT 70.
XLV. LETTERS, 1906, TO VARIOUS PERSONS. THE FAREWELL LECTURE. A SECOND SUMMER IN DUBLIN. BILLIARDS AND COPYRIGHT.