Where can I find music sheets in the Klavarskribo notation ?
The Klavarskribo Foundation of the Netherlands will be very glad to help you with this. Their catalogue for the classical music is vast, not to say complete, and a continuous effort is undergoing to increase the number of available items for modern music.
What is the Klavarskribo Foundation ?
It is the organisation that has inherited the music sheets from the inventor of the Klavarskribo notation, Cornelius Pot. They are a music sheets publishing organisation.
Are the courses published online free of charge ?
Yes, they are absolutely free and you are welcome to distribute them. They have been made available by the Klavarskribo Foundation of the Netherlands and Claes Honig as an introduction to the Klavarskribo notation.