Yes, I am doing the same. I have been slowly going through Aerofiles and am up to H so far with no luck.
You have my heartfelt admiration for attempting this - Aerofiles is a black hole that can swallow and crush you. Have you also noticed their search engine is dead?
But to my eyes, I don't think it's a Lincoln cabin cruiser.
The Lincoln appears to have a greenhouse cabin dropped on the passengers head whereas the mystery aircraft has it's passengers totally enclosed in the fuselage.
From what I can see and imagine - the tail shape is very different.