For information about manufacturers of alternatively sized keyboards, please visit: http://paskpiano.org/manufacturers-technicians/. See also the articles below.
For information about where you can try alternatively sized keyboards, including universities there they are available to students, please visit: http://paskpiano.org/where-to-try-these-keyboards/
For a list of upcoming and recent events featuring alternatively sized keyboards, please visit: http://paskpiano.org/events/
3D Printed Models: A physical model of the piano keyboard that can be touched and felt can be far more convincing than logical arguments and data sets on a page or screen. These can be made quite cheaply by anyone with access to a 3D printer. Please visit our companion website: TASK (Technicians for Alternatively Sized Keyboards) to read more and access the computer files: http://taskpiano.org/3d-keyboards/
Brown, Richard (2016). Alternate keyboards for the world: The Donison-Steinbuhler standard, Piano Technicians Journal, December. http://smallpianokeyboards.org/wp-content/uploads/2019/03/Steinbuhler-article-Dec16-PTJ.pdf
Fandrich, Del (2016). A modern flat-strung piano, Piano Technicians Journal, December. http://smallpianokeyboards.org/wp-content/uploads/2019/03/Fandrich_A-Modern-Flat-strung-Grand_Dec-16.pdf
Fandrich, Del (2017). Practical keyboards for normal people, Piano Technicians Journal, January. http://smallpianokeyboards.org/wp-content/uploads/2019/03/Fandrich_Practical-keyboards-for-normal-people_Jan-2017.pdf