I have just found a downloadable list of the Record Series on the website of the YAS.
Please find below an extracted list of those volumes which deal with wills and probate:
Volume 4 (1888) Wills in the York Registry 1636-1652
Volume 6 (1889) Index of Wills in the York Registry 1389-1514
Volume 11 (1891) Index of Wills in the York Registry 1514-1553
Volume 14 (1893) Index of Wills in the York Registry 1554-1568
Volume 19 (1891) Index of Wills in the York Registry 1568-1585
Volume 26 (1899) Index of Wills in the York Registry 1603-1611
Volume 28 (1900) Index of Wills in the York Registry 1612-1619
Volume 32 (1902) Index of Wills in the York Registry 1620-1627
Volume 35 (1905) Index of Wills in the York Registry 1627-1636, Administrations 1627-1652
Volume 38 (1907) Index of Wills from the Dean and Chapter's Court at York 1321-1636, with appendix of Original Wills 1524-1724
Volume 47 (1912) Selby Wills 1634-1710
Volume 49 (1913) Index of Wills, Administrations and Probate Acts in the York Registry 1660-1665 and also of the Unregistered Wills and the Probate Acts Aug 1st 1663 to July 31st 1634
Volume 60 (1920) Index of Wills, Administrations and Probate Acts in the York Registry 1666-1672 and also of Wills etc in Certain Perculiars
Volume 68 (1926) Index of Wills, Administrations and Probate Acts in the York Registry 1673-1680 and also of Wills in the Peculiar of Beeford
Volume 73 (1928) Index of Original Documents of the Consistory Court of York 1427-1658 and also the Probate and Administration Acts in the Court of the Dean of York 1604-1722
Volume 89 (1934) Index of Wills, Administrations and Probate Acts in the York Registry 1681-1688 including the "Vacancies", 1683 and 1686-1688
Volume 93 (1937) Index of Wills and Administrations entered in the Registers of the Archbishops at York, being Consistory Wills etc 1316-1822, known as the Archbishop's Wills
Volume 134 (1972) Yorkshire Probate Inventories 1542-1689
Kind regards,
Jon