Wikipedia: Warsaw Ghetto Uprising
Hyperlinked article describing the January to May, 1943, insurrection by Jewish fighters as well as its relation to the 1944 Warsaw Uprising.
Warsaw Ghetto Uprising, The
Eyewitness account by Marek Edelman, one of the leaders of the Jewish uprising.
Spartacus Educational: Warsaw Uprising
Describes both the rebellion by Jewish resistance groups in 1943 and the general insurrection by the Polish Home Army and civilians in 1944.