Lagerwall's or Rydahl's work?

[Timo Ronkainen]

Art identification question for Danish and Swedish donaldists. I was 
browsing through 1966 volumes of Finnish Aku Ankka and noticed these covers, 
first one is credited in Inducks for Nils Rydahl and the latter for unknown. 
To me both of those look very much like Einar Lagerwall's artwork:
http://outducks.org/no/dd/1965/no_dd1965_28a_001.jpg

http://outducks.org/de/mm/mm1965/de_mm1965_34a_001.jpg

Pen strokes typical for Lagerwall of mid 60's, heavy use of movement lines 
(strokes depicting movement). Quite different from Rydahls thick, unvariable 
lines.
Am I totally wrong? Is there reliable source for dd1965_28a being Rydahl ?

Best Wishes
Timo

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