First flown in December 1941 as D-AVIU, this Ju 52 was leased and then sold to Aero O/Y by Lufthansa. It was damaged in Malmö, Sweden on 6 July 1943. Apparently it went to Germany for repairs as Ju52archiv says it was impressed by the Luftwaffe and crashed in spurious 'Savoja, Finland' on 23 March 1944 with a German military crew. Repaired. To ABA in Sweden in 1945 as SE-BUE, delivered from Germany? Eventually VH-BUU. This is certainly not a 1950s photo as indicated by the source. The aircraft in the background looks like a (captured) Tupolev SB. Photo from: Finnish Heritage Agency

Wearing neutrality markings. Photographer Thérèse Bonney (1894-1989) was in Finland when the USSR invaded the country on 30 November 1939. Picture assumed taken at Malmi. Photo by: Thérèse Bonney / UC Berkeley Library

Delivery of Aero O/Y's second Ju 52 - OH-ALK was already put in service during 1932. These aircraft operated on floats in summer until the opening of Malmi airport in 1938. In peacetime after the Winter War on 14 June 1940, operating Aero O/Y flight 1631 from Tallinn, Kaleva was shot down by two Soviet DB-3 bombers during Soviet preparations to occupy Latvia. All nine people on board, including diplomatic couriers, were killed. This is said to have been the first commercial airliner shootdown by fighter aircraft in history. Photo by: Finnish Heritage Agency

Search for Umberto Nobile's airship Italia. Photo from Dutchman Sjef van Dongen who worked for a coal mine on Svalbard and took part in the international rescue operation. Photo from: Zeeuws Archief

During the 1929 summer season the magazine Suomen Kuvalehti offered free rides in this aircraft at various places in Finland. The photo was taken at the start of the campaign at Helsinki's seaplane airport. Note the double (post) horn in the flag used by Aero O/Y. Photo from: Finnish Heritage Agency

Junkers F13 production ran from 1919 until 1932, then an unusually long time. K-SALG was delivered to Aero O/Y in May 1928. The aircraft was soon sent to Norway to take part in the search and rescue operations following the crash of the airship Italia. Photo by: Harald Rosenberg / Helsinki City Museum

Finnair's predecessor Aero O/Y sent its newest Junkers F13 to take part in the international rescue effort following the crash of the airship Italia. The large building is the Tromsø leather factory. The police station now stands where the seaplane is. Photo from: Nasjonalbiblioteket (Norway)