Vintage U.S. School of Music Home Study Course - 1940’s- 50’s

Vintage home study course from the U.S. School of Music. Vintage 1940’s-50’s? Features 3 folders of Piano Accordion Lessons; Lesson 13 to 24, 25 to 36 and 37 to 48. Each of the 3 folders hold both single and leaflet lessons/music sheets, music information sheets. There is a generic letter from US School of Music titled ‘ REQUIREMENTS FOR CERTIFICATE OF PROFICIENCY’. Collectible item for music enthusiasts. Pages are all intact in each folder, lie flat and in good condition. Folders are also in good condition, creamy-yellow colour, slight further yellowing at a couple edges due to age. I have included a pic of the colour of the music sheet sets next to the folders. Any slight yellowing of edgess wouldd be due to the vintage.