A NOTE ON SOURCES
Resources

The text for this web site is a combination of original material and adaptations from previous publications of the Department of Energy (including contractors) or its predecessor agencies (primarily the Atomic Energy Commission and the Manhattan Engineer District).  "Adaptations" run the gamut from summaries to close paraphrases to text being taken directly.  This material was gathered and adapted for use by the DOE's Office of History and Heritage Resources.  For detailed notes on what sources were used for any particular page, see its entry in "Sources and Notes."  The easiest way to reach the notes for any specific page is by using the link at the bottom of that page.  For a discussion of the best general sources on the Manhattan Project, see the "Suggested Readings."

To the best of our knowledge, all text and images on this web site are in the public domain.  Almost all of the photographs were generated by government agencies, or by contractors working for the government, and as such are not subject to copyright.  Most of these photographs were acquired from government web sites or government publications.  In a handful of cases, photographs were used whose copyright had expired; these were acquired from the Library of Congress's web site.  Some of the photographs have been "retouched," but in all cases the intention was only to restore the image to its original form as much as is possible.  (Click here to see a "before and after" example of retouching.)  As with the text, the sources of all images are noted in the entries in "Sources and Notes" for the pages in which they appear.  

The most common sources of text for this web site were, in descending order, 

In addition, 21 web pages, and significant portions of 36 more, had their text adapted from other publications of the Department of Energy or its predecessor agencies.  

Original to the History Division, now Office of History and Heritage Resources, 2003

The following entries were written by the Office of History and Heritage Resources, Department of Energy: 

Gosling, The Manhattan Project

Most of the "Event" pages, and many other pages as well, were adapted, in many cases verbatim or nearly verbatim, from F. G. Gosling, The Manhattan Project: Making the Atomic Bomb (Washington: History Division, Department of Energy, January 1999).  The web pages that adapt material primarily from Gosling, The Manhattan Project are: 

Hogerton, ed., The Atomic Energy Deskbook

Most of the "Science and Technology" pages on this web site were adapted, in many cases verbatim or nearly verbatim, from John F. Hogerton, ed., The Atomic Energy Deskbook (New York: Reinhold Publishing Corporation, 1963, prepared under the auspices of the Division of Technical Information, U.S. Atomic Energy Commission).  As noted on the title page, "the publisher assigns copyright to the General Manager of the United States Atomic Energy Commission."  The "Science and Technology" web pages that adapt material primarily from The Atomic Energy Deskbook are: 

Other DOE or Predecessor Agencies Publications

Portions of other pages on this web site were adapted, in many cases verbatim or nearly verbatim, primarily from other government publications.  These publications (and the web pages that contain material adapted from them) are: