Marsh donated his own library, which included the former library of Bishop Edward Stillingfleet, of over 10,000 volumes, regarded as one of the finest in England, which he had bought for 2,500 pounds.
Marsh gave away his extensive personal library, including the collection amassed by Bishop Edward Stillingfleet, which was estimated to be worth over 10,000 volumes and regarded as one of the most impressive in England. He acquired this collection for 2,500 pounds.