Thanks for the info on the Greek community in Ast. 50%, if you take out the public housing complex, was a vast maj. back then.
As to JH, I don't think that it's all Mex. or from Corona. There are all kinds of Central and South Americans. For many years there was a dam on Roosevelt Ave at Junction and at 51ST. In the late 70's it moved west to 74St. By the 80's the pressure became too great and the Woodside- JH area was inundated from both east and west. I was born and raised in the Newtown section of Elmhurst, then spent 30 yrs. in Woodside between Queens Blvd and Roosevelt. As a college student I delivered mail in Elm. & JH on my vacations. What's happened to that area is a sin.
Along Roosevelt you used to have a large middle-class Colombian community, but they too have moved to suburbia. These days, J-Heights is largely Mexican (especially towards Corona), with Ecuadorans in the western portion, with a few other nationalities in between. The Indians who used to live around 74th street have moved to Lawn Guyland (Hicksville especially) and they have been replaced by Bangladeshis.
My ex-girlfriend was born in Peru, settled on Northen Boulevard in J-Heights when she was 12 and moved to Elmhurst a year later. I know the area very well. Last I heard, she married a Chinese guy and they live in Flushing.