What was the name of the publishing company Mark Twain co-founded that went bankrupt?

The publishing company Mark Twain co-founded that went bankrupt was Charles L. Webster and Company.

Founded in New York in 1884, the firm was named after Charles L. Webster, Mark Twain’s nephew by marriage and its business manager. Twain established the company partly because he was dissatisfied with earlier publishers and wanted greater control over the production and profits from his books.

The firm used subscription publishing, selling books through traveling agents rather than relying solely on conventional bookstores. It issued major works such as Twain’s Adventures of Huckleberry Finn and Ulysses S. Grant’s memoirs. Grant’s memoirs were especially successful and temporarily strengthened the company’s finances.

Other projects performed poorly, however, and Twain repeatedly reinvested his own money to cover losses. Relations between Twain and Webster deteriorated, and Webster left the company in 1888. The firm eventually closed after Twain formally declared bankruptcy on April 18, 1894. The American Publishing Company was another important publisher of Twain’s books, but it was not the company referred to in this question.