Most of the photos on this site were extracted from reference images (high-resolution tiffs, 20 to 200 megabytes in size) from the Library of Congress research archive. (To query the database click here.) Many were digitized by LOC contractors using a Sinar studio back. They are adjusted by your webmaster for contrast and color in Photoshop before being downsized and turned into the jpegs you see here.
UPDATE: The photo now has a caption.
Signs the president's name. Mrs. Leafie E. Dietz, recently appointed the "Secretary to Sign Land Patents," a position in the Government Land Office which, since its creation under President Arthur, has been held only by women. She signs "Herbert Hoover" to land patents and is the only person who has authority to sign the President's name.
Washington circa 1930. The document at hand in this unlabeled Harris & Ewing negative is a form ready for the signature of Herbert Hoover. Perhaps someone versed in bureaucratic history will recognize this lady. View full size.