Anderson, R.G.W., Burnett, J. & Gee, B., 'Handlist of Scientific Instrument-Makers' Trade Catalogues 1600-1914', (National Museums of Scotland, 1990); Trade literature signed 'L. Casella' see publication citation, L. Casella, 1871, on MimsyXG;

Casella Cel: http://www.casellausa.com/store/page.cfm?pageID=7950434C48