Help identifying aircraft.

[Adler]

Found the photograph floating about, but unable to find the origin - even through reverse image search.

 

[Silencer1]

Siebel Fh 104 Hallore. Never seen it with the ski undercarraige
https://en.wikipedia.org/wiki/Siebel_Fh_104_Hallore
And more precisely:
https://www.luftarchiv.de/index.htm?/flugzeuge/gotha/firma.htm

 

[Aerohydro]

Here's another photo, this is from Airwar.ru - Siebel Fh.104 Hallore