Oh gosh, I can't remember. This was a design and installation a landscape architect and I did many years ago and it was installed by a professional contractor. You might find something like it here: http://www.landscapesupply.ca/products/
OOOH---looks like an interesting website! Thanks for the link. I was really just testing out the new capabilities...but curious about yours. I'm currently building a small concrete rubble wall. Yours is what it would like to be if Gepetto could turn it into a REAL rock wall in his workshop! LOL!
It would have to be a LONG drive around here to get off private property----but there are a few folks nearby who are more than willing to share, and I've taken advantage of that! Mostly we have round fieldstones here, though---nothing flat and stackable. Hence the collection of ex-sidewalk pieces.