National Committee of Americans of Polish Extraction, also known as the National Committee of Americans of Polish Descent or its Polish abbreviation KNAPP, was a Polish-American organization active in the years 1942-1959 in the United States.

Bolesław Ignacy Florian Wieniawa-Długoszowski was a Polish general, adjutant to Chief of State Józef Piłsudski, politician, freemason, diplomat, poet, artist and formally for one day the President of the Republic of Poland.