The Prayer Book tradition has always included “black letter days”, that is, commemorations listed in a calendar of various saints of old. They are distinct from the Major Feast Days: those each have their own Collect and Lessons in the Prayer Book, at least one special reading in the Daily Office, and are expected to be observed by all. The commemorations in the calendar, variously called “lesser feasts” or “minor saints days”, however, are optional. The early Prayer Books didn’t even contain resources by which these days could be observed in the liturgy, they were simply points of reference and remembrance.
As time has passed, standard resources for the observance of these lesser feasts have come together. Typically, the idea is to have a small selection of Collects and Lessons for different types or categories of saints (one for Bishops, one for Martyrs, one for Monastics, etc.). Over time, however, more and more of the minor saints received unique sets of Collects and Lessons. The Episcopal Church, USA, ended up with many of these in its volume, Lesser Feasts and Fasts. So far, it seems that the ACNA is moving back toward the simpler approach by providing 9 thematic Collects and Lessons for these minor saints days.
Let’s say you want to observe today’s commemoration, King Alfred the Great, at a Friday Eucharist service. He is known for his work in fixing up the church in his realm, and renewing Anglo-Saxon society, so the categories Reformer of the Church and Renewer of Society both fit, as well as the generic “Of Any Commemoration” options. The Collects are the end of this document, and the Lessons at the end of this.
As an aside, if you want the new Prayer Book to print the Collects and Lessons together to cut down on unnecessary page-flipping, please join my cause and send them an email! firstname.lastname@example.org
Or, if you want to make use of what the Episcopalians came up with a little over ten years ago:
O Sovereign Lord, you brought your servant Alfred to a troubled throne that he might establish peace in a ravaged land and revive learning and the arts among the people: Awake in us also a keen desire to increase our understanding while we are in this world, and an eager longing to reach that endless life where all will be made clear; through Jesus Christ our Lord, who lives and reigns with you and the Holy Spirit, one God, for ever and ever. Amen.
Wisdom 6:1–3,9–12,24–25 (wisdom literature about wise kings and rulers)
Psalm 21:1–7 (a king who trusts in God) or 112:1–9 (the blessedness of the righteous)
Luke 6:43–49 (good and evil fruit; wise and foolish builders)