Photo, Print, Drawing Gaithersburg Latitude Observatory, 100 De Sellum Avenue, Gaithersburg, Montgomery County, MD Drawings from Survey HAER MD-78
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HAER MD,16-GAITH,1- (sheet 1 of 6) - Gaithersburg Latitude Observatory, 100 De Sellum Avenue, Gaithersburg, Montgomery ...- Contributor: International Commission for Geodesy - Fulks, I T - Smith, Edwin - Historic American Engineering Record - International Latitude Service (Ils)
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HAER MD,16-GAITH,1- (sheet 2 of 6) - Gaithersburg Latitude Observatory, 100 De Sellum Avenue, Gaithersburg, Montgomery ...- Contributor: International Commission for Geodesy - Fulks, I T - Smith, Edwin - Historic American Engineering Record - International Latitude Service (Ils)
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HAER MD,16-GAITH,1- (sheet 3 of 6) - Gaithersburg Latitude Observatory, 100 De Sellum Avenue, Gaithersburg, Montgomery ...- Contributor: International Commission for Geodesy - Fulks, I T - Smith, Edwin - Historic American Engineering Record - International Latitude Service (Ils)
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HAER MD,16-GAITH,1- (sheet 4 of 6) - Gaithersburg Latitude Observatory, 100 De Sellum Avenue, Gaithersburg, Montgomery ...- Contributor: International Commission for Geodesy - Fulks, I T - Smith, Edwin - Historic American Engineering Record - International Latitude Service (Ils)
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HAER MD,16-GAITH,1- (sheet 5 of 6) - Gaithersburg Latitude Observatory, 100 De Sellum Avenue, Gaithersburg, Montgomery ...- Contributor: International Commission for Geodesy - Fulks, I T - Smith, Edwin - Historic American Engineering Record - International Latitude Service (Ils)
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HAER MD,16-GAITH,1- (sheet 6 of 6) - Gaithersburg Latitude Observatory, 100 De Sellum Avenue, Gaithersburg, Montgomery ...- Contributor: International Commission for Geodesy - Fulks, I T - Smith, Edwin - Historic American Engineering Record - International Latitude Service (Ils)