The Posen speech has been digitally preserved at the Library of Congress. It was pressed to approximately 40 vinyl discs. You can contact the Recorded Sound Research Center for more information. I don't know what restrictions there may be on the material.

Patrick Smetanick
Audio Preservation Specialist
Library of Congress
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-----Original Message-----
From: Association for Recorded Sound Discussion List <[log in to unmask]> On Behalf Of MICHAEL DOLAN
Sent: Monday, September 21, 2020 4:02 PM
To: [log in to unmask]
Subject: [ARSCLIST] Himmler Posen Speech

Hello all,

Since the National Archives is not available, does anyone know where a full copy of Heinrich Himmler’s 1943 “Speech to the SS Officers” at Posen might be available?  An excerpted version is available online but the entire speech is needed.  I believe they have already checked with the U.S. Holocaust Memorial Museum.

Himmler, Heinrich. "Speech to the SS Officers" ("Rede zu den SS Fuhrern"). Posen, Oct. 4, 1943. Approx. 190 min. Item 242-256, 242-259, 242-257, 242-251, 242-252, 242-249, 242-264, 242-263, 242-250, 242-266, 242-180. 

Thank you.