This is the first textbook. It seems small, but there is enough material for a couple years of work in pre-k through first grade. Even if you are starting with an older child, I would start with the algebra first portion.  This book covers: Introduction to rods;  Introduction to the Language of Addition, Subtraction, Multiplication, Fractions as Operators, and Symbols; Numbers 1-10; Numbers 1-20.

This was gifted to us from the Bronx Charter School for Better Learning. We have their permission to distribute it here. This book is out of print. I've never seen a copy of it anywhere. This is a treasure chest of material!

This is an easy introduction to the Cuisenaire-Gattegno method for teaching math. It was written for parents, though many teachers have enjoyed this book as well.

This book reexamines Gattegno's work, including the subordination of teaching to learning, and it's application in 21st Century classrooms. It contains two essays written by teachers who are implementing Algebra before Arithmetic in their classroom and their experience with it.  Ian explores the functional relationships between patterns of Cuiseanire Rods. Available free from ATM.

Newly reprinted, this book can be purchased from The Cuisenaire Company UK. If I had to pick just one Goutard's books, it would be this one. It happens to be in print so that helps. 

Goutard presents quite a few situations which are unique to this book. Unfortunately, it very difficult to find anymore and when you do find it, it's insanely expensive. If you want to be a serious teacher of mathematics and can find this for less than $50 grab it. You won't be sorry.

This isn't really a book but a booklet. It seems as though this is Goutard's first attempt to take what can be utterly frustrating in Gattegno's work and put it into some usable form. I feel like they were sure it wouldn't take much to make it clear, but alas, that's not been my experience. There are some real gems in this book, but good luck finding it for under $100.

Miquon was the first attempt to take Gattegno's work and put it into a curriculum for regular schools. The biggest difference is the focus on number sense vs symbol sense. Miquon starts out with numbers whereas Gattegno starts with algebra/symbols. The curriculum goes up to 3rd grade but covers concepts way above what would be found in a standard 3rd grade math curriculum.

Mortensen More Than Math is a full curriculum up to high school that uses delineated rods. Many students could work through the curriculum by themselves. 

Math for Love puts out a supplement curriculum rather than a full curriculum. However, I've included them because they use Cuisenaire Rods and also because creator Dan Finkel uses many of Gattegno's ideas when creating lesson plans.  While the primary focus is number sense, there is a lot of emphasis on understanding the symbols as well. 

Bob Hazen has an online courses for student's grades 3 -6 that are an  introduction to algebra. The courses cover some pretty advanced algebra concepts using Mortensen Rods.  You'd be surprised how easy it is for most children. If your kids have been using Math-U-See and have become bored by it, Bob's courses may be a good supplement. 

Math-U-See is to Mortensen Math what Miquon is to Gattegno. Math-U-See took Jerry Mortensen's work and made it more friendly for public schools and homeschoolings parents. It is a full curriculum.