Pogonowski was born in Lwów, Poland. After the invasion of Poland in World War II, in December 1939 Pogonowski, aged 18, left Warsaw with the intent of joining the Polish Armed Forces in the West. He was arrested in Dukla by the German authorities on suspicion of aiming to join the resistance. He was moved between prisons and camps for five years thereafter. Interned at the Krosno, Jasło, and Tarnów prisons among others, he was sent with 500 prisoners to Auschwitz, and from there, several months later, to Oranienburg-Sachsenhausen. He survived the camps and was liberated on 2 May 1945. Pogonowski summarized his horrific experiences at the German concentration camps in a three-page article popularized in Richard C. Lukas' Out of the Inferno. In 1954 he graduated in Civil Engineering at the Catholic University: Institute Superieur de Commerce in Antwerp. He moved to the United States and in the following years worked as project engineer in the oil industry.
Historian and lexicographer
Pogonowski published an illustrated history of Poland, historical atlases and a work on Polish heraldry. Pogonowski's Jews in Poland was praised by M.K. Dziewanowski, who called the book a "pioneering attempt 'encompass' Jews within the Polish discourse, a rarity in American scholarship and in the discourse about Jews." He was criticized by Piotr Wrobel and Joanna Michlic, who believes him to represent the ethnonationalist trend in historiography. Pogonowski compiled several Polish-English, English-Polish dictionaries which have appeared since 1981, including his Unabridged Polish-English Dictionary and the Polish-English, English-Polish Standard Dictionary. His journalistic work includes broadcasts for the Polish far-right Radio Maryja and columns for its sister publication, Nasz Dziennik. He has also written columns in the Polish-American biweekly, Gwiazda Polarna.
The Jews in Poland: A Documentary History; the Rise of Jews as a Nation from Congressus Judaicus in Poland to the Knesset in Israel, New York, Hippocrene Books, 1993.
Świat po amerykańsku, Fundacja 'Nasza Przyszłość', 2004.
Heraldyka – Heraldry, CD-ROM, published by Juliusz Ostrowski, 2002.
, Hippocrene Books, 2000.
Jews in Poland: A Documentary History, New York, Hippocrene Books, 1998.
Historyczny Atlas Polski, Wydawnictwo Baran i Suszczyński, 1995.
Poland: A Historical Atlas, New York, Hippocrene Books, 1987.