Pottering about online, I have been surprised by the flourishing of 'Pothier-style' chant editions that was apparently going on in the 1890's, as well as the availability of these online.ġ891 Liber Antiphonarius (juxta ritum monasticum)ġ891 Liber Antiphonarius (pro vesperis et completorio officii Romani)ġ891 Librii Antiphonarii Complementum (pro laudibus et horis)