Quite correct Moses and yes it is Akermann (without C). I read some place that the guy was born somewhere in Latvia and his Birth name was Janis Akermanis (or something similar) which became later americanized as John D. Akermann...Single boom pusher is the Ackerman JDA-8 powered by a notoriously unreliable Szekely radial.
Your turn naturally
Cheers
BG
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