I have scanned in an article from a liturgical studies journal called Ephemerides Liturgicae (some of you may have heard of it) entitled "Choix de lectures pour la liturgie dominicale". According to Bugnini* one of the authors of this article, José Féder, S.J., was from November 1965 a member of Group 11 of the Consilium, which was responsible for the post-conciliar reform of the lectionary. The article was published in Eph. Lit. 79.4-5 (1965), pp. 249-316, but p. 252 gives a date of September 1964 for the completion of the article.
Please click here to view the article - bearing in mind that it is in French! At first glance, it makes for interesting reading: partly because it gives an example of a three-year cycle not built around the idea of one year for each synoptic Gospel (as we ended up with), partly because it gives some of the liturgical sources for its selection of pericopes, and partly because one of its co-authors was drafted into Group 11 of the Consilium.
I hope to get round to translating the article into English and tabulating the order of readings this year, though since my French language skills are not great, that will depend on when I can get some help from a couple of my friends.
* Cf. A. Bugnini, The Reform of the Liturgy 1948-1975 (Collegeville, MN: Liturgical Press, 1990), p. 409 fn. 12.