[ Leonardo Forti wrote in 21.09.07 MMDigest:

> Does someone know whether the composer Ruggero Leoncavallo
> played himself rolls for any roll company (Welte, or others)?

I went into the GPRR [Global Piano Roll Repository] and copied all
the the information from the rollography by Larry Sitsky [below].
Leoncavallo did not make any other recordings for other firms,
so far as I can tell. Ref. https://thegprr.org/ 

Ruggiero Leoncavallo performs his own compositions:

Welte 1020 -- Pagliacci. Intermezzo
Welte 1022 -- I Medici. Prelude to Act I
Welte 1023 -- La Boheme. Waltz and Musette
Welte 1024 -- Romance in A Minor
Welte 1025 -- Au Bord du Lac. Reverie
Welte 1026 -- Flirt Waltz in F Major
Artecho 2014 -- converted from Welte 1020

Cheers,
John McClelland
Portland, Oregon