• Geological map of Maryland on which are also shewn the chief topographical features to aid in the triangulation.

    Scale 1:200,000. Manuscript; pen-and-ink. Relief shown by contours. Geologic information not shown. Shows only Washington, Frederick, Carroll, Montgomery, Howard, Prince Georges, Anne Arundel, Charles, Calvert, and St. Mary Counties. Includes text on "Materials employed." col. map on sheet 132 x 75 cm.

    • Contributor: Alexander, J. H.
    • Original Format: Maps
    • Date: 1840
  • Catalog Record

    Map A. Catalog Record Only

    Scale 1:211,200. "Proportion of vertical scale = 4 feet." Relief shown by form lines. Shows Dorchester, Somerset, and Worcester Counties on the Eastern Shore of Maryland. Shows soil types. Issued with 5 other maps. Accompanied by: Report of the engineer & geologist, in relation to the new map, to the executive of Maryland. 1836. 89 p. diagr. chart. map 40 x 61 cm.

    • Contributor: [Alexander, J. H.
    • Original Format: Maps
    • Date: 1835
  • Catalog Record

    Plan of a portion of the triangles on the western shore of Maryland. Catalog Record Only

    Scale not given. Also covers northern Chesapeake Bay region. Issued with 5 other maps. Includes regional triangulation map. Accompanied by: Report of the engineer & geologist, in relation to the new map, to the executive of Maryland. 1836. 89 p. diagr. chart. map 35 x 40 cm.

    • Contributor: Alexander, J. H.
    • Original Format: Maps
    • Date: 1835
  • Catalog Record

    Plan of a portion of the triangles on the western shore of Maryland : 1835. Catalog Record Only

    Also covers northern Chesapeake Bay region. Probably drawn by John H. Alexander. Photocopy of printed map with hand-lettered title and place-names, in the Enoch Pratt Free Library, Baltimore. Includes inset. LC copy accompanied by negative photocopy. 1 map : photocopy ; 35 x 42 cm.

    • Contributor: Alexander, J. H.
    • Original Format: Maps
    • Date: 1835
  • Catalog Record

    1840 geological map of Maryland on which are also shown the chief topographical features to aid in the triangulation. Catalog Record Only

    Scale 1:200,000. Photocopy. Relief shown by contours. Geologic information not shown. Shows only Washington, Frederick, Carroll, and Montgomery Counties and parts of Anne Arundel and Prince Georges Counties. Includes text. map on sheet 61 x 73 cm.

    • Contributor: Alexander, J. H.
    • Original Format: Maps
    • Date: 1840
  • Catalog Record

    Map of the proposed canal between the Choptank and Blackwater Rivers. Catalog Record Only

    Scale not given. Relief shown by contours and form lines. LC copy imperfect: Upper margin section deteriorated. Shows area from Cambridge to Blackwater River. Shows landowners. Issued with 5 other maps. Includes cross section. Accompanied by: Report of the engineer & geologist, in relation to the new map, to the executive of Maryland. 1836. 89 p. diagr. chart. map 24 x 46 cm.

    • Contributor: [Alexander, J. H.
    • Original Format: Maps
    • Date: 1835
  • Catalog Record

    Map and profile of the survey of Allen's Fresh. Catalog Record Only

    Scale not given. Oriented with north toward the upper right. Relief shown by hachures. Shows landowners. Issued with 5 other maps. Includes 3 cross sections. Accompanied by: Report of the engineer & geologist, in relation to the new map, to the executive of Maryland. 1836. 89 p. diagr. chart. map 18 x 46 cm.

    • Contributor: [Alexander, J. H.
    • Original Format: Maps
    • Date: 1835
  • Catalog Record

    Report on the new map of Maryland 1834 / Catalog Record Only

    Shows names of soil varieties. Relief shown by hachures. Cover title. Imperfect: Foxed, trimmed. DLC Accompanied by text: Report on the new map of Maryland 1834 : engineer's report. 50 p. ; 23 cm. -- Statistical table: Tabular view of the analyses of the marls belonging to the Tertiary and Cretaceous formations of Maryland. [1] table : with text ; 26 x 39 cm., ...

    • Contributor: Alexander, J. H.
    • Original Format: Maps
    • Date: 1835