I used to have #7 - I'm quite sad that is seems to have disappeared in one of my moves. At some point, I should reacquire it.
Also, while poking around online to see if the UCD library has #5, I stumbled on this site http://www.sacred-texts.com/neu/eng/child/ It seems to be the text of the set put online - I can't verify this, not having a copy to compare it to, but I thought some people might find it useful.