Part 61

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