Reformers on the frequency of the Lord's Supper

Calvin

'No meeting of the church should take place without the Word, prayers, partaking of the Supper and almsgiving' (Calvin, Institutes, 4.17.44).

'the Lord's Table should have been spread at least once a week for the assembly of Christians' (Calvin, Institutes, 4.17.46)

Luther

'As oft as ye do it, it is nevertheless implied that we should do it often; and it is added for the reason that He wishes to have the Sacrament free, not limited to special times, like the Passover of the Jews, which they were obliged to eat only once a year, and that just upon the fourteenth day of the first full moon in the evening, and which they must not vary a day. As if He would say by these words: I institute a Passover or Supper for you which you shall enjoy not only once a year, just upon this evening, but often, when and where you will, according to every one's opportunity and necessity, bound to no place or appointed time; although the Pope afterwards perverted it, and again made a Jewish feast of it.' (Luther, Large Catechism, The Sacrament of the Altar)

'people should be told in sermons to receive Communion three or four times a year in order that, strengthened by the Word, them may afterward fall asleep' (p.305, Luther: Letters of Spiritual Counsel ed. and trans. Theodore G. Tappert [1539])

'we should not compel anyone to believe or to receive the Sacrament and should not fix any law or time or place for it. Instead, we should preach in such a way that the people make themselves come without our law and just plain compel us pastors to administer the Sacrament to them....if they believed that they possessed so much evil and needed so much good, they would not neglect the Sacrament...they would come on their own, rushing and running to it; they would compel themselves to come and would insist that you give them the Sacrament' (Luther, Preface to the Small Catechism)

'the whole congregation should come together on Sundays, and mass and Vespers be sung, as has been customary. In both services there should be preaching for the whole congregation, in the morning on the Gospel for the day, in the evening on the Epistle...If anyone desires to receive the sacrament at thhis time, let it be administered at a time convenient to all concerned.

'The daily masses should be completely discontinued; for the Word is important annd not the mass. But if any should desire the sacrament during the week, let mass be held as inclination and time dictate; for in this matter one cannot make hard and fast rules.' (p.377, 'Concerning the Order of Public Worship' in Selected Writings of Martin Luther: 1520-1523, ed. Theodore G. Tappert)

Others

'For among us masses are celebrated every Lord's Day and on the other festivals, in which the Sacrament is offered to those who wish to use it, after they have been examined and absolved.' (Melanchthon, Apology of the Augsburg Confession, Article 14.1)

'The day when the Lord's Supper is ministered, which commonly is used once a month, or so oft as the congregation shall think expedient' (Knox, Genevan Book of Order (1556))

In Zwingli's Zurich the 'communion service was to be held four times in the year, - at Easter, Whitsunday, autumn, and Christmas' (Schaff, History of the Christian Church, Volume VIII: Modern Christianity. The Swiss Reformation, The Reformation In Zurich. 1519-1526, § 20. The Reformed Celebration of the Lord’s Supper)