The book "Index of Works of Project Gutenberg by Thomas Wentworth Higginson" is a collection of works by the famous American writer, literary critic and abolitionist Thomas Wentworth Higginson. This book collects the author's works, which were published as part of Project Gutenberg. Among these works can be found essays, lectures, articles and other literary works that reflect Higginson's deep spiritual world and social views. The book is an important source for studying and understanding the work of this outstanding writer. If you're looking for interesting works of 19th-century American literature, Thomas Wentworth Higginson's Index to the Works of Project Gutenberg is a great choice.