Technical 1959 cadillac 390 vacuum line routing?

Well here I go again. I sold this car on the
Hamb 4 years ago and had to have her back.
Sent the fella a pm 8 months ago about buying
It back and luckily he got back to me a few weeks
Ago. She is now home safe and sound.

I've just been reinstalling the original carb
And valve covers that don't leak.

I can't seem to find out where one vacuume
Line goes. It's on the intake behind the carter
Carb.
I'm gonna try and post pics of it.
One with a hose that was just sitting there
And one with it removed

I've already ordered the vacuum advance line
And the missing choke tube.

Car runs good but I can't find any pictures
Where this one line goes
Can anyone please assist me in this

Thanks john

 

Here's what she looks like currently.

 

It's been over 20 years since I worked on one...but are the any vacuum actuated flapper doors in the heater? and is the distributor vacuum advance connected? I can't remember any other vacuum operated accessories on those cars.

 

Squirrel
You are correct thank you
All the heater parts where in the trunk had to look trough them.

 

On my 59 there is a diaphragm type piece on the firewall, I think to keep it from stalling after a low vacuum situation. Anyway, that piece on the firewall has a vacuum line that connects to the port you are asking about.