Actually, a Beech 18 could look like an Electra 10E. Stretch the nose and reshape it, stretch the tail, stretch the h/stab span and it looks pretty close. I looked through my stuff and could only find a Ventura, which is an enlarged Electra 14, which is a modded Electra 10 (Super Electra) I've attached a pic of the Ventura and also here's a link to the Cleveland Electra 10 plan that William mentioned.

http://www.clevelandairline.com/ASP/PRODUCT.asp

(Oops, can't link direct to the pic and the plan. Use the search tool - Lockheed, then Airliner/Cargo then Golden Age.)