Here are links to the Margaret Homfray Reading Curriculum Lectures Videos:
Montessori Reading Curriculum, Lecture 2, The Insets for Design
Montessori Reading Curriculum, Lecture 3. Sandpaper Letters
Montessori Reading Curriculum, Lecture 4. (no link)
Montessori Reading Curriculum, Lecture 5 Phonetic Reading
Montessori Reading Curriculum, Lecture 6. Phonetic Grammar
Montessori Reading Curriculum, Lecture 7. Phonograms