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Sydney Warburg

1880 – 1999

American writer

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About Sydney Warburg

Lived 1880 – 1999 (aged 118–119). Sydney Warburg was an essayist.

Sidney Warburg (1880–1947) is the pen name of an author or a group of authors who remained anonymous and who published a book about funding of the Nazi Party by American bankers between 1929 and 1933. The book's Dutch title refers to three conversations Warburg said Sidney would have had with Adolf Hitler. The original states that the text was "Door Sidney Warburg, vertaald door J.G. Schoup" (By Sidney Warburg, translated by J.G. Schoup).

Publication history The original version of this book was published in 1933 under the title De geldbronnen van het nationaal-socialisme, 3 gesprekken met Hitler (Financial origins of national socialism) in the Netherlands. According to Jean Gustave Schoup (sometimes spelled as Jan Gustaaf Schoup) the original text was a report in the English language provided by Sidney Warburg to him, which he turned into a Dutch language book. After the book came out the Dutch publisher, Van Holkema & Warendorf, learned from various sources that no "Sidney Warburg" existed in the New York Warburg family and, around January 1934, called back all copies from book dealers and destroyed the whole edition.

A German version exists with the title: So wurde Hitler finanziert, Das verschollene Dokument von Sidney Warburg über die internationalen Geldgeber des Dritten Reiches, herausgegeben und eingeleitet von Ekkehard Franke-Gricksch, Verlag Diagnosen, Leonberg 1983.

The original Dutch text was republished in 2008 together with an introduction by Karl Hammer Kaatee.

Book summary The so-called "Sidney Warburg", presented by the translator of 1933 as the son of a great American banker of Kuhn, Loeb & Co (Felix Warburg), describes a meeting had taken place in July 1929 with a "Carter" (John Ridgley Carter, who married Alice Morgan) the president of JP Morgan's Guarantee Trust, the leaders of the Federal Reserve, "the young Rockefeller" – John D. Rockefeller Jr. – and "Glean from Royal Dutch" (Henri Deterding). It was decided that Warburg who spoke German, had to travel to Germany and ask Hitler how much money he needed to become head of state. The only condition was that Hitler would take an "aggressive foreign policy". The expressed intention of the sponsors of Warburg was to counter France, not cause war but the threat of war because of the divergence of interest between the French on German reparations, versus the financial elite of the United States and Great Britain, countries which were also parties to the Treaty of Versailles.

"Sidney Warburg" details three meetings with Hitler between 1929 and 1933. In total approximately $32 million were transferred to the NSDAP.

1929 The first meeting took place in a brewery and Hitler calculated his needs on a sheet of paper with the help of a Von Heydt. It appears from the book that Hitler would have received nearly $10 million in 1929. This was a very significant amount in this time of economic depression – the Nazis gave food and shelter to many supporters. Hitler was not informed of the reason for their help and did not ask. On one occasion he would have asked out loud if "Warburg" was himself Jewish, but had rejected the idea before he could answer.

1931 In October 1931, Warburg received a letter informing him that Hitler had spent all the 10 million and needed new financing. Back in Germany, he met Hitler again in his home where he asked "500 million marks to make a revolution or 200 million marks for acquiring power legally". Warburg, having telegraphed its bankers received a refusal message. He is visited by Hermann Göring and Julius Streicher and literally gets caught in part by Göring who accuses him of avarice. After having complained to Hitler about the behavior of his lieutenant, he received a letter of apology from Göring and next a visit from Von Heydt and Gregor Strasser. The amount is divided into three transfers: one at Mendelsohn & Co., Amsterdam, where he travels to with Von Heydt, the other in the Rotterdamsche Bankvereniging, Rotterdam, where he goes to with Gregor Strasser, and the third at Banca Italiana in Rome with Göring. In Rome, Italo Balbo and Cesare Rossi receive them, he and Göring.

1933 Warburg is in Berlin on the day of the Reichstag fire. On the evening of that day he meets Göring and Goebbels, Warburg promises Hitler $7 million payable directly to Warburg via Rhenania Joint Stock Co., the German branch of Royal Dutch in Düsseldorf. The book concludes with considerations by Warburg about predicting anything good on the consequences of these money transfers: The world continues to suffer under a system that has to bow to a Hitler to keep itself on its feet. Poor world, poor humanity!.

Analysis The book that has been published under the pseudonym Sidney Warburg, De Geldbronnen van het nationaal Socialisme: drie gesprekken met Hitler (Funding of National Socialism: Three Conversations with Hitler), published by Van Holkema & Warendorf's Uitg.-Mij. NV disappeared almost immediately from bookstores. This book dealt with funding received by the Nazi Party in 1929, 1931 and 1933.

Franz von Papen recommends the book in his memoirs that were published in 1953.

Henry Coston wrote in 1975 that Otto Strasser alone is the author.

The editor of the English version of Hitler's Secret Backers wrote in 1983 that the original edition of this book might have been a warning by an individual member of the Warburg family against the coming European war.

Pierre de Villemarest wrote in 1984 that the pseudonym Sydney Warburg could refer to Georg Bell, a German engineer acting as an agent of Henri Deterding, or the brothers Otto Strasser and Gregor Strasser.

According to what E.R. Carmin wrote in 1994 the book is a factual testimony as to Des Griffin.

In the introduction of the 2008 edition Karl Hammer Kaatee wrote that J.G. Schoup's son had admitted that J.G. Schoup had published under a pseudonym what he had learned himself as a spy about Hitler's financial backers.

Cees van Hoore described Jean Gustave Schoup in 2014 as follows: "Schoup was not only a talented writer but also a crook who boasted about his contacts inside the German Sicherheitsdienst. He told the resistance that he could liberate arrested resisters by paying ransom to these German contacts. However, Schoup kept the money for himself. I think this is why Schoup has been liquidated in 1944."

Jasper Wielaert proved previously in 2014 that Schoup, aiming to profit, did indeed cunningly deceive the resistance. Nevertheless, he also arranged hiding places for Jewish people. Above that Jasper Wielaert makes it thoroughly clear that corrupt members of the Rotterdam resistance in 1944–1945 were equally involved in seeking financial gain. Wielaert hints that the individuals involved in the assassination may have been interested in murdering him not just because of his scams, but for their own very personal reasons.

Denial For Jacques Attali, the Sidney Warburg in question, posing the son of Felix Warburg, Warburg is imaginary, from which no one has carried this name of Sidney It will be worth many family denials and false pamphleteer published in Amsterdam will be awarded to a Dutch journalist scandal. The book was the subject of an indignant denial in 1949, as a signed declaration (an affidavit) by James Warburg, son of one of the two Warburg brothers implicated in the book.

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Important facts

Born
1880
Birth century
Died
1999
Occupation

People in Sydney Warburg's life

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Frequently asked questions

Who was Sydney Warburg?

American writer

When was Sydney Warburg born?

Sydney Warburg was born in 1880.

When did Sydney Warburg die?

Sydney Warburg died in 1999.

What was Sydney Warburg's occupation?

Sydney Warburg was an essayist.

Sources & further reading

· Wikipedia: Sydney Warburg

· Wikidata: Q3506851

· DBpedia: Sidney Warburg

Cite this page

APA: Biography.guide. (2026). Sydney Warburg. https://biography.guide/sydney-warburg/

MLA: "Sydney Warburg." Biography.guide, https://biography.guide/sydney-warburg/.

Chicago: "Sydney Warburg." Biography.guide. https://biography.guide/sydney-warburg/.

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