Tracking back foreign keys?

In one of my apps, I have an "images manager" that's become unmanageable. I'd
like to be able to easily track key dependencies.

Let's say I have a set of tables like this:

create table Customers  (
id serial unique not null primary key,
name varchar not null,
address varchar not null
image integer references images(id)
);

create table Vendors (
id serial unique not null primary key,
name varchar not null,
vendor_account varchar,
picture integer references images(id)
);

create table Images (
id serial unique not null,
filename varchar not null,
mime varchar not null
);

I know that in the images table I have lots of cruft, "dead wood", but when I
delete from images, is there a "nice" way of finding out what dependencies
there are?

Something like

Select pg_table.name from pg_table where pg_field references images.id

?

How else do I put it? The output I'd like would be something like
images.id / tablename / table.primary key
11 / Vendors / 14
12 / Customers / 9

Can this be done?

-Ben

--
"I kept looking around for somebody to solve the problem.
Then I realized I am somebody"
   -Anonymous