A Nomad of the Time Streams[1] is a compilation volume of Michael Moorcock's early steampunk trilogy, begun in 1971 with The Warlord of the Air and continued by its 1974 and 1981 sequels, The Land Leviathan and The Steel Tsar.

In the first book, The Warlord of the Air, Bastable finds himself transported to an alternate late-20th century Earth where the European powers did not stir each other into a World War and in which the mighty airships of a British Empire on which the sun never sets are threatened by the rise of new and terrible enemies.

In The Land Leviathan, Bastable visits an alternate 1904 in which most of the Western world has been devastated around the turn of the 20th century by a short, yet terrible war fought with futuristic devices and in which biological weapons were also used.

In the final book, The Steel Tsar, Bastable witnesses an alternate 1941 where Great Britain and Germany became allies around the turn of the 20th century and thus neither the War of 1914 nor the October Revolution took place.

In an ironic to postmodernist framework yet strictly writing in the language of a 19th-century adventure romance, Moorcock explores themes of racism, imperialism, socialist and anarchist politics, and the impact of technology in the nascent steampunk genre which this trilogy did much to help develop.