Jacks, James, 63, 158, 165, 167, 171 James, Arthur E., 24 Jay, Daniel, 30 Jayne, John, 43, 158, 162, 167, 169 Jefferson, Thomas, 19, 24, 62 Jerome, Chauncey, 68 Jess, Z., 10 Johnson, John, 139, 146, 148 Jones, Samuel, 135 William, 135 W. & S., 135, 137, 139 _Journal of Andrew Ellicott_, 20, 131, 132, 133, 136, 142, 144, 145 Keese, Samuel, 149 Kennard, John, 126, 129, 158, 162, 166, 171 Ketterer, Alloysius, 61, 158, 164, 166 Kiely, Edmond R., 7 Kimball, LeRoy E., 8, 36 Kimmel, Anthony, 144, 145 King, Benjamin, I, 37, 43, 44, 109, 158, 169 Benjamin, II, 43, 158, 162, 164, 167, 169 Daniel, 36, 43, 158, 162, 168, 169 Mary, 43 Mehitable, 43 Rufus, 43 Samuel, 43, 158, 164, 168, 169 King & Hagger [Benjamin King and William Guyse Hagger], 43, 44, 158, 164, 167, 169 Kizer, David J., 60 Thomas J., 60 Knowlton, Mary, 43 Kugler, Charles, 62, 76 Lamb, A., & Son, 29, 158, 163, 168, 169, 171 Anthony, 10, 28, 158, 163, 164, 165, 168, 169, 171 John, 29, 158, 163, 168, 169, 171 Lane, Gladys R., 45 Latrobe, Benjamin, 150 John H. B., 24 Laudonet, Mary, 54 Leadbeater, 22 Leake, Isaac Q., 29 Lee, Billy, 149 L'Enfant, Pierre Charles, 19 LePhillips, Philip, 24 Lewis, John, 7 Lawrence, 149 Leybourn, William, 10 Library Company of Philadelphia, 21-22 Lloyd, Anna, 81 loadstones, 27, 38 Loftan, Thomas, 150, 151 Logan, James, 58 Love, J., 10, 72 Lovering & Sons, Joseph, 98 Ludlow, I., 60 Lyle, Robert, 54, 56 Lyon, Mrs. Eliza R., 142 Madison, James, 19 Magee, D. F., 63 magic lantern, 27 magnets, 63 maps, 7, 53 Mariner's Museum, 107, 108, 153 Maryland Historical Society, 23 _Maryland Journal and Baltimore Daily Advertiser_, 21 Maskelyne, Nevil, 142, 146 Mason, Charles, 24 Mason-Dixon Line, 19 Massachusetts Historical Society, 80, 82, 83, 84, 86, 87, 94, 96, 102, 104, 109, 116, 117 _Massachusetts Magazine_, 40 _Matchett's Baltimore Directory_, 110 Mather, Rev. Cotton, 82, 84 Mathews, Catherine Van C., 21 Maupertius, de, 146 Maverick, Jotham, 93, 94 Samuel, 94 Mayer's _Tables_, 22 McCabe, William, 49 McHenry, James, 22 _Memoirs of the Academy of Arts and Sciences_, 40 Mendenhall, Thomas, 63, 158, 163, 166, 168 Mercer Museum, 90, 153 Merrill, P., Esq., 126, 129 Miller, Aaron, 53, 158, 162, 166, 171 Mirick, McAndrew, 87 Mitchell, Edwin Valentine, 36 Maria, 40 Moore, S., 10 Moor's Indian Charity School, 72 Morey, John, 113 Morris, M., 53, 158, 163 Morton, Charles, 82, 83 Mount Vernon, 54, 57, 144 Mount Vernon Ladies Association of the Union, 57 Nantucket, 40 National Maritime Museum, 150 Newell, Andrew, 106, 107, 154, 158, 161, 168, 169, 171 Charles, 107, 161 Joseph, 107, 161 New Hampshire Historical Society, 81, 82, 153