Q: How to Output Video from MBP to 4 Antique Televisions?

For an art project, I’d like to have four different videos playing on four different 1950s/1960s televisions simultaneously. I don’t need audio to output from the TVs, just video. But the fact that the TVs are so old makes this complicated.

Can I do this from just one rMBP? Any software you particularly recommend for something like this? Is there a piece of hardware that makes this possible? Like a four channel video output interface?  Any advice is appreciated as this idea is a bit over my head. Thanks in advance.