51. An improved map of the United States Creator: Shelton & Kensett Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: 1813 Institution: Boston Public Library
52. In flight with United Air Lines Creator: United Air Lines Format: Prints Collection: Norman B. Leventhal Map Center Collection Date: [ca. 1933] Institution: Boston Public Library
53. Indians of the U.S.A. Creator: Jefferson, Louise E.; Friendship Press, inc. Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: 1944 Institution: Boston Public Library
54. Karte von Nord-America für den schul- und privatgebrauch Creator: Rheinhard, Hermann. Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: [1880–1889] Institution: Boston Public Library
55. Landing facilities and proposed airway system in the United States, 1923 Creator: United States. Army. Air Service; United States. Army. Engineer Reproduction Plant Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: 1923 Institution: Boston Public Library
56. Lewis' free soil, slavery, and territorial map of the United States Creator: Lewis, John C., 1820-1883 Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: [1848] Institution: Boston Public Library
57. Lloyd's American railroad map Creator: Lloyd, James T. Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: [1861] Institution: Boston Public Library
58. Lloyd's American railroad map Creator: Lloyd, James T. Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: 1861 Institution: Boston Public Library
59. Lloyd's military maps : showing the principal places of interest Creator: H.H. Lloyd & Co Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: 1861 Institution: Boston Public Library
60. Lloyd's new county map of the United States and Canadas showing battle fields, railroads, &c., compiled from the latest goverment surveys & other reliable & official... Creator: Schönberg & Co Format: Maps/Atlases Collection: Norman B. Leventhal Map Center Collection Date: 1863 Institution: Boston Public Library