The largest community of Carpatho-Rusyns living beyond the Carpathians is found in the United States. Today there are approximately 600,000 Americans of Carpatho-Rusyn origin. A valuable discussion on Carpatho-Rusyn immigration can be found in:

• Richard Renoff (b. 1936) and Stephen Reynolds (b. 1937) Editors, Proceedings of the Conference on Carpatho-Ruthenian Immigration, Harvard University, 1975,
• Richard Renoff, Carpatho-Ruthenian Resources and Assimilation 1880-1924, [Fairview, NJ, 1984];
• Paul R.Magocsi (b.1945), Our People - Carpatho-Rusyns and their descendants in North America, Toronto, 1984;
• Alexander Baran (b.1926), "Carpatho-Ukrainian Emigration 1870-1914", in: New Soil-Old Roots: The Ukrainian Experience in Canada, Winnipeg 1983, p.252-275.
• Ivan Ladizhinsky (1905-1976) gives the example of immigration from one Carpatho-Rusyn village in: Karpatorossy v Europi i Ameriki, primir Kamionka, [Carpatho-Rusyns in Europe and America, the Example of [the Village] of Kamionka], Cleveland, 1940.

• IUliian Bachyns'kyj (1870-19??) deals with the period before 1914 and constantly blames Carpatho-Rusyns for anti-Ukrainian separatism in his: Ukrains'ka immigratsiia v Z"iednanykh Derzhavach Ameryky [Ukrainian Immigration in the United States], L'viv 1914.

On the same period see also: Ladislav Tajtak, "Pereselennia ukraintsiv Skhidnoi Slovachchyny do 1913 r." [The Emigration of Ukrainians from Eastern Slovakia before 1913], Duklia, IX, 4 (Presov, 1961), p.97-103, and Oleksander Mytsiuk (1883-1943), "Z emihratsii uhro-rusyniv pered svitovoiu viinoiu" [On the Emigration of the Uhro-Rusyns Before the World War], Naukovyi zbornyk tovarystva Prosvita, XIII-XIV (Uzhhorod, 1937-38), p.21-32.

Petr Kokhanik (1880-1969), describes the beginning of immigration and (mostly Orthodox) religious life at that time, in his:

• Rus' i pravoslavie v Sivernoi Amerikie, [Rus' and Orthodoxy in North America], Wilkes-Barre, 1920, and also in: "Nachalo istorii Amerikanskoi Rusi" [The Early History of American Rus'], reprinted in: Filipp I. Svistun (1844-1916), Prikarpatskaia Rus' pod vladeniem Avstrii [Galician Rus' under Austrian Rule], Trumbull, CT, 1970, p.473-496.

The beginnings of the conversion of Carpatho-Rusyns to Orthodoxy can be also traced in:

• Alexis Toth (1853-1909), Letters, Articles, Papers and Sermons, vol.1-4, Chilliwack-Minneapolis, 1978-88.

The fate of Greek-Catholic Rusyns could be researched in an anthology of documents, which was compiled by John Slivka (1899-1986),

Historical Mirror Sources of the Rusin and Hungarian Greek Rite Catholics in the United States of America 1884-1963, Brooklyn 1978.
See also: Walter Warzecki (b.1929) "The Rusin Community in Pennsylvania", in: The Ethnic Experience in Pennsylvania, Lewisburg, [1973], p.175-216 and Basil Shereghy (1918-1988), The Byzantine Catholics, Pittsburgh, 1981.

Several documents describe the activity of American Carpatho-Rusyn and Galician Russophiles:

• Memorandum Russkago kongressa v Amerikie, sozvannago 'Soiuzom Osvobozhdennia Prikarpatskoi Rusi', posviashchaemyi svobodnomu russkomu narodu v Rossii, Russkomu uchreditel'nomu sobraniu, Russkomu pravitel'stvu [Memorandum of the Russian Congress in America, Called Together by the League for the Liberation of Carpatho-Russia, Concerning Free Russian Nation in Russia, Russian Constituent Meeting, Russian Government], n.p., 1917;
• Memorandum of the Carpatho-Russian Council in America, Concerning Eastern Galicia with Lemkivschina and Bukovina, New York, 1921;
• Tretii vseobshchii karpatorusskii kongress v Amerike [The Third General Carpatho-Russian Congress in America] New York, 1919-20;
• Victor Hladyk (1873-1947), Proekt memoranduma amerikanskikh grazhdan karpatorusskago i voobshche russkago proiskhozhdeniia v dili vozsoedinieniia vsikh russkikh zemel' s Rossiei [The Draft of the Memorandum of American Citizens of Carpatho-Russian and Generally Russian Origin Dealing with the Reunification of All the Russian Lands with Russia], Philadelphia, 1941.

One document tells about Hungarian interest in American Rusyns: Hungary Exposed:Secret State Document reveal[s] the plotting of that Government in the United States. American Slovaks and Ruthenians...to be the victims, [New York, 1907?].

On the political activity of Transcarpathian Rusyns during the turbulent period after the First World War see:

Joseph Danko, "Plebiscite of Carpatho-Ruthenians in the United States recommending Union of Carpatho-Ruthenia with the Czechoslovak Republic", Annals of the Ukrainian Academy of Arts and Sciences, XI, 1-2 (New York, 1964-68), p.184-207 (6 documents) and Paul R.Magocsi (b.1945), "The Political Activity of Rusyn-American Immigrants in 1918", East European Quarterly, X, 2 (Boulder, Colorado, 1976), p.347-365. See also memoirs by one of the political activists of that period, Petr Hatalák, Jak vznikla myslenka pripojity Podkarpatskou Rus k Ceskoslovensku [How the Idea Arose to Unite Subcarpathian Rus' with Czechoslovakia], Uzhhorod, 1935.