Vladka Meed, who with her flawless Polish and Aryan good looks was able to smuggle pistols, gasoline for firebombs and even dynamite to the Jewish fighters inside the Warsaw Ghetto, and who after the war became an impassioned leader in the national effort to educate children about the Holocaust, died Wednesday in Phoenix. She was 90.

She died after a steady decline from Alzheimer’s disease, said her son, Dr. Steven Meed.

With her husband, Benjamin, and a handful of other survivors, Mrs. Meed took a leading role in efforts to get the world to acknowledge what the Nazis had done to the Jews of Europe. It was a difficult proposition, given the impulse of so many people after World War II to put the slaughter behind them.

The Meeds helped start the Warsaw Ghetto Resistance Organization in 1962 and then the American Gathering of Jewish Holocaust Survivors, which, beginning in 1981, rallied thousands to reunions in Jerusalem and in several American cities. These events sometimes featured American presidents, and the resulting attention inspired films, books and courses and contributed to the creation of museums in Washington and New York.

Mrs. Meed’s resistance work started with the deportation of 265,000 Jews from Warsaw to the Treblinka death camp and continued after the uprising by the ghetto’s besieged remnants. She told her story in Yiddish in her 1948 book, “On Both Sides of the Wall,” one of the first published eyewitness accounts. It was translated into English, German and at least three other languages, is still in print, and was a central source of the 2001 television movie “Uprising.”