These cylinder recordings were found some years ago by A.N. Sharma and Anukriti Sharma. See The Age before Vinyl for details. (In the event the link evaporates, it is archived here.)
Has anyone else confirmed these? It is curious that the only claimed recording of Vishnu Digambar has him singing baalam re and not a bhakti rasa composition, suggesting it was recorded before he turned his life entirely towards spiritual pursuits.
All the photographs below are taken from Mazha Sangeet Vyasang by Govindrao Tembe.
My thanks to Dr. Vishwesh Kulkarni for sending me the recordings.
A modern version of panchatunda nararundamaladhara by Vasantrao Deshpande is here.