- Action Models 1
- Action Models 2
- Action Models 3
- Action Models 4
- Action Models 5
- Donated Entirely To the Piano Technician Guild Museum
031 Experimental Drop Action Model
032 Experimental Upright Action Model Betz
033 Square Piano Action Model
034 Experimental Drop Action Model
036 Experimental Grand Action Model
037 Experimental Action Model M102
038 Pinblock Plate Model
039 Pratt, Read Grand Action Model
040 Pratt Read Upright Action Model
041 Pratt, Read Grand Action Model, Plexiglass
