1. 1
   Records of the Department of State relating to political relations between the United States and Honduras, l9l0-29

   Cyhoeddwyd 1966

   Washington : The National Archives, National Archives and Records Service, General Services Administration, 1966.

   1 microfilm reel : 35 mm.

   “...The National Archives, National Archives and Records Service, General Services Administration,...”
   

   Local Call Number: Llwytho...
   

   Guide
   

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2. 2
   Documents relating to the negotiation of ratified and unratified treaties with various tribes of Indians, 1801-69

   Cyhoeddwyd 1960

   Washington : National Archives, National Archives and Records Service, General Services Administration, 1960.

   10 microfilm reels ; 35 mm.

   “...National Archives, National Archives and Records Service, General Services Administration,...”
   

   Local Call Number: Llwytho...
   

   Llwytho...

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3. 3
   Records of the Department of State relating to political relations between the United States and Costa Rica, 1910-1929

   Cyhoeddwyd 1967

   Washington : The National Archives, National Archives and Records Service, General Services Administration, 1967.

   1 microfilm reel ; 35 mm.

   “...The National Archives, National Archives and Records Service, General Services Administration,...”
   

   Local Call Number: Llwytho...
   

   Guide
   

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4. 4
   Records of the Department of State relating to political relations between El Salvador and other states, 1910-29

   Cyhoeddwyd 1968

   Washington : The National Archives, National Archives and Records Service, General Services Administration, 1968.

   1 microfilm reel : ill. ; 35 mm.

   “...The National Archives, National Archives and Records Service, General Services Administration,...”
   

   Local Call Number: Llwytho...
   

   Guide
   

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5. 5
   Records of the Department of State relating to political relations between the United States and Austria-Hungary and Hungary, 1921-29

   Cyhoeddwyd 1968

   Washington : The National Archives, National Archives and Records Service, General Services Administration, 1968.

   1 microfilm reel ; 35 mm.

   “...The National Archives, National Archives and Records Service, General Services Administration,...”
   

   Local Call Number: Llwytho...
   

   Guide
   

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6. 6
   Records of the Department of State relating to political relations between Austria-Hungary and Hungary and other states, 1920-29

   Cyhoeddwyd 1968

   Washington : The National Archives, National Archives and Records Service, General Services Administration, 1968.

   2 microfilm reels : ill. ; 35 mm.

   “...The National Archives, National Archives and Records Service, General Services Administration,...”
   

   Local Call Number: Llwytho...
   

   Llwytho...

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   Wedi'i Gadw mewn:

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