Sender: Rodolphe B. Roquette, Postfach (P.O. Box), Wuppertal-Elberfeld, Brit. Zone-Germany.
Verification: Wuppertal is a city in Germany, and Elberfeld is a well-known district within it. Following WWII, this area was indeed part of the British Occupation Zone ("Brit. Zone"). The use of "Postfach" is standard for a P.O. Box. The "22a" prefix was part of the postal code system used in the British Zone during that period. The sender entity is an individual, Rodolphe B. Roquette, a plausible name. Conclusion: Plausible and historically consistent for 1948.
Recipient: Mr. Richard C. Dahlem, P.O. Box 138, Kenvil / New Jersey, U.S.A.
Verification: Kenvil is an unincorporated community within Roxbury Township, Morris County, New Jersey. Google Maps confirms its existence. A P.O. Box in Kenvil, NJ, USA is entirely plausible for 1948. Richard C. Dahlem is a plausible name. Conclusion: Plausible for 1948.
Sender:
Absender: Rodolphe B. Roquette
Postfach [P.O. Box]
Wuppertal-Elberfeld
Brit. Zone-Germany
[Postal Code/Routing:] 22a
[Printed:] Wohnort, auch Zustell- oder Leitpostamt (Place of residence, also delivery or main post office)
[Printed:] Straße, Hausnummer, Gebäudeteil, Stockwerk oder Postschließfachnummer; bei Untermietern auch Name des Vermieters (Street, House number, Building part, Floor or P.O. Box number; for subtenants also Name of the landlord)
Recipient:
Mr. Richard C. Dahlem
P.O. Box 138
Kenvil / New Jersey
U.S.A.
[Printed:] Straße, Hausnummer, Gebäudeteil, Stockwerk oder Postschließfachnummer; bei Untermietern auch Name des Vermieters (Street, House number, Building part, Floor or P.O. Box number; for subtenants also Name of the landlord)
Handwritten Note (Blue Ink):
ansd 5/13 Air [Answered May 13th via Airmail]
Sent back his mint
& used on envelope.
His letter was ansd [answered]
5/9/48. [May 9th, 1948] (Note: Two different dates mentioned for answering)
Date Written: April 14-48 (April 14, 1948)
Message:
Dear Mr. Dahlem!
On Dec. 2-47 [December 2, 1947] I have sent you a letter with 2 sets of Leipzig Fair 1947 (mint and used), in which I asked you, if you are interested in exchanging stamps. Up-to-date I did not receive any answer So I should like to know, if you received my lines I dropped to you. At that time, there was no possibility to send any registered letter, and I must send it on the usual way. There are many members of XXXXXXXXXXXXXXXXXX [Text obscured/redacted - likely a club name] our Club, which don't reply letters. But I'd like to ask you, before I write something to the manager, may be, my letter has been lost. So I hope to hear from you pretty soon and with kind regards I remain
Sincerely yours
R. B. Roquette
Handwritten Note (Blue Ink):
Blue bird
Origin: Wuppertal-Elberfeld, Germany
Destination: Kenvil, New Jersey, USA
Distance: The approximate great-circle distance between Wuppertal, Germany, and Kenvil, NJ, USA is around 6,100 km (approx. 3,800 miles) according to Google Maps.