10. Radium: Uranium, Direct Determination of Ratio Act., undated Box 6, Folder 42 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
11. North Carolina Uraninite, Ignited own Blast, undated Box 6, Folder 43 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
12. North Carolina Uraninite, Third Heating, 1906-1906 Box 6, Folder 44 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
1. Calculation of Ratio of activities of Minerals to Uranium, 1906-1906 Box 6, Folder 33 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
2. Polonium and Actinium, 1906, undated Box 6, Folder 34 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
3. Eve's Uraninite and Radium Solution, undated Box 6, Folder 35 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
4. Standard RaBr2 Solution and Uraninite, undated Box 6, Folder 36 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
5. N. C. Uraninite once Ignited, Calculation of U:Ra Ratio, undated Box 6, Folder 37 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
6. Activity of Florium and Thorium Minerals, undated Box 6, Folder 38 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis:
7. Uranium Oxide, Ignition of in O and H, Phosphate from?, undated Box 6, Folder 39 Bookmark Collection Context Yale University -Manuscripts and Archives Bertram Borden Boltwood papers, 1890-1932Writings, 1890-1926Ore Analysis: