The estimates of the number of hideaways vary from several hundred to approximately two thousand. Even though the majority of the Robinsons perished during the war, most of the information about their circumstances comes from those who survived. The largest group of hideaways consisted of around 36 individuals who were led by two medical doctors. The Robinsons also included a group of Jewish Combat Organization (Polish: Żydowska Organizacja Bojowa, ŻOB) Warsaw ghetto fighters, who managed to leave the ruined city in mid-November.