Allow Anonymous users to view SOME, NOT ALL published content

I am setting up Drupal 7 on my home server, before going live in internet.

We have a photo gallery, and want only parts of it open to the public. For example, on our last trip to Germany, I took a number of train photos - (I am a train fanatic), that I would like to have open to any anonymous user. I also have photos of our daughters, that I would only like family and friends to see.

I don't know if this is the best way to go about it, but based on my limited knowledge of Drupal 6, and the Using Drupal (O'Reilly) book here is what I thought I needed to do.

Set up two content types - photo and photo-private. Set up a few roles - "family and friends", photographer, photographer-editor.

Set anonymous users to view 'photos' and disallow 'photos-private'. Set "family and friends" to view both.

However, in the Drupal 7 control panel, it looks like my option for anonymous users is to either view published content or not. How do I go about allowing anonymous users to view only some of the published content as opposed to all of it?

Or, is there some other way altogether of going about this?

Thanks, Carolyn