[ Ref. "Master Rolls Reconstructed for Recuts" and
[ "Converting Any Standard MIDI File to G-code" at
[ https://www.mmdigest.com/Archives/Authors/Aut6165.html 
[ Also "File Format for Perforating Music Rolls", by Julian Dyer,
[ https://www.mmdigest.com/Archives/Digests/201806/2018.06.20.04.html

Seek scanMIDI files of piano rolls, lots of them! I'm sending out a
call to all piano roll archivists: If any of you have scanMIDI files 
of piano rolls, send them over!

With some help from Julian Dyer, at one point or another I figured out 
how to convert scanMIDI files into punchMIDI master files that can be 
cut into new rolls after conversion to Gcode.

If you have rare rolls that are wrecked but still scannable, and were 
archived in scanMIDI form, then those should be possible to convert back 
into a 1-to-1 replica with next to no errors.

PunchMIDI files made with Perforation Editor are also something I'd like 
to get copies of, especially of Duo-Art pop rolls and, if they exist, 
Ampico roll reconstructions.

Piotr Barcz
Upstate New York
thepiotrcorporation@gmail.com.geentroep [delete ".geentroep" to reply]

[ Piotr, your project is very interesting. I use Wayne Stahnke's WEB/ANN
[ file format for editing music rolls. Where can I obtain definitions
[ of scanMIDI and punchMIDI file formats? -- Robbie