Airline and airport memorabilia - Flight Manuals and Navigation maps - 1950-1960

An important lot of aviation history. The lot contains only original pieces!
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The lot consists of:
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Sikorsky Aircraft Flight Manual Sikorsky Helicopter Model S-55
Publication No. SA4045-8
Registration ratio No. 762
Dated 1954/1955
110 pages
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Flight Manuel N565 MR
Beechcraft Twin Bonanza
Not dated, but most likely 1950's
53 pages. With photo inserted
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Procedures for Air Navigationi Services Radiotelephony Procedures
Doc 7181-COM/546/3
Dated 1955
IV, 49 pages
With a few old manuscript annotations
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Furthermore, there are approx. 37 old navigation maps, mainly 1950's to 1960's. A few a bit younger perhaps. Covering many different areas such as Africa, Netherlands/Germany, Asia (former Dutch East Indies) .
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A truly unique collection.