Eml synthesizers

I'm just curious if anyone knows what classic gear the designers at EML could have seen to 
influence the 100. I guess it's tough as I'm not sure myself when the 100 came out. I know it 
was out in '71. And if they went to trade shows it's not unusual to see prototypes of other 
brands before release. 

I'm just curious about things like did they see a Minimoog? I'd be incredibly surprised and 
impressed if they didn't. I would guess the 2600 street date is later, but I think Arp was 
showing it off quite some time before.