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  1. 1
    No digital object

    Assembling a mosaic of aerial photographs. Assembly is tricky, as prints must be set in place when wet and shrinkage must be allowed for. Ontario Department of Lands and Forests

    Archives / Collections and Fonds
    Item (Accession level)
    Photographs
    Item ID number:
    3240609
    Date:
    c 1955
    Source:
    Private
    Reference:
    Accession number: 1987-140 NPC, Box number: 22115
    Assembling a mosaic of aerial photographs. Assembly is tricky, as prints must be set in place when wet and shrinkage must be allowed for
  2. 2
    No digital object

    After a mosaic of aerial photographs has been assembled, much pertinent detail must be lettered in by hand. Ontario Department of Lands and Forests

    Archives / Collections and Fonds
    Item (Accession level)
    Photographs
    Item ID number:
    3240610
    Date:
    c 1955
    Source:
    Private
    Reference:
    Accession number: 1987-140 NPC, Box number: 22115
    After a mosaic of aerial photographs has been assembled, much pertinent detail must be lettered in by hand. Ontario Department of Lands and Forests
  3. 3
    No digital object

    The final stage of map compilation is the final painstakingly careful tracing. Ontario Department of Lands and Forests

    Archives / Collections and Fonds
    Item (Accession level)
    Photographs
    Item ID number:
    3240612
    Date:
    c 1955
    Source:
    Private
    Reference:
    Accession number: 1987-140 NPC, Box number: 22115
    The final stage of map compilation is the final painstakingly careful tracing. Ontario Department of Lands and Forests. Published in JM Bishop, 
  5. 5
    No digital object

    The sketchmaster in use at the Ontario Department of Lands and Forests aerial surveys headquarters at De Hvilland Airport

    Archives / Collections and Fonds
    Item (Accession level)
    Photographs
    Item ID number:
    3240608
    Date:
    c 1955
    Source:
    Private
    Reference:
    Accession number: 1987-140 NPC, Box number: 22115
    The sketchmaster in use at the Ontario Department of Lands and Forests aerial surveys headquarters at De Hvilland Airport. Published in JM Bishop, 
  6. 6
    No digital object

    One phase of map compilation is 'pointing' or marking control points on the aerial photographs and their overlapping correlatives. Ontario Department of Lands and Forests

    Archives / Collections and Fonds
    Item (Accession level)
    Photographs
    Item ID number:
    3240611
    Date:
    c 1955
    Source:
    Private
    Reference:
    Accession number: 1987-140 NPC, Box number: 22115
    One phase of map compilation is 'pointing' or marking control points on the aerial photographs and their overlapping correlatives
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