- A history of Italian unity : being a political history of Italy from 1814 to 1871. (1899)
- vol. 1
- vol. 2
- Whig Imperialism. (1900)
- Mazzini. (1902)
- Italy to-day. (1909) / by Bolton King and Thomas Okey
- The life of Mazzini. (1911)
- Poems of Yesterday and To-day. (1921) / by Walter Ray (pseudonym of Bolton King)
- Fascism In Italy. (1931)
Some or all works by this author are in the public domain in the United States because they were published before January 1, 1928.
This author died in 1936, so works by this author are in the public domain in countries and areas where the copyright term is the author's life plus 86 years or less. These works may be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.
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