Mark Twain's Letters - Volume 2 (1867-1875) is a collection of over 300 letters written by Mark Twain during the years 1867 to 1875. This period was a time of great personal and professional change for Twain. He got married, started a family, and published his first book, The Celebrated Jumping Frog of Calaveras County. He also began to develop his signature style of writing, characterized by its humor, wit, and social commentary.

The letters in this volume offer a unique and intimate glimpse into Twain's life and work during this important period. Twain writes about his family, his friends, his travels, and his writing. He also shares his thoughts on a wide range of topics, including politics, religion, and society.