The Abbey of St. Gall as a Centre of Literature & Art – James Midgley Clark – Google Books June 14, 2025 by jlamprecht https://books.google.com/books?id=YwU4AAAAIAAJ&pg=PA148&lpg=PA148&dq=Antiphonary+of+Hartker&source=bl&ots=ToPZ1_DPtK&sig=yRd1PeotgCvknasmn-put9kMHsQ&hl=en&ei=bIw2StyEGYLEM9LrhPcJ&sa=X&oi=book_result&ct=result&resnum=10#PPA148,M1
