As far as references the earliest I know of are the Jewish texts: Pesah 10:1–9 and Targum Pesah 10.1–14. Sources that you may have available would be the Jewish New Testament Commentary which implies that Judas drank from all but the last cup to (several commentaries do), Mishnah Pesahim X. 2–10, A. Edersheim, The Temple, S. Greijdanus, Korte Verklaring, Vol. II, J. B. Segal, The Jewish Passover from the Earliest Times to A.D. 70, London, 1963. Though commentaries vary on whether Judas drank from all but the last 2 cups or only the last cup they pretty much agree that the Lord’s Supper was instituted at this “Passover Meal.”

The order of The Passover Feast, The main elements were as follows (Hendriksen, William, and Simon J. Kistemaker. Vol. 11, New Testament Commentary : Exposition of the Gospel According to Luke):

1. A prayer of thanksgiving by the head of the house; drinking the first cup of (diluted) wine.

2. The eating of bitter herbs, as a reminder of the bitter slavery in Egypt.

3. The son’s inquiry, “Why is this night distinguished from all other nights?” and the father’s appropriate reply, either narrated or read.

4. The singing of the first part of the Hallel (Psalms 113, 114), and the washing of hands. The second cup.

5. The carving and eating of the lamb, together with unleavened bread. The lamb was eaten in commemoration of what the ancestors had been commanded to do in the night when the Lord smote all the first-born of Egypt and delivered his people (Exod. 12 and 13). The unleavened bread was in commemoration of “the bread of haste” eaten by the ancestors.

6. Continuation of the meal, each eating as much as he liked, but always last of the lamb. The third cup.

7. Singing of the last part of the Hallel (Psalms 115–118). Fourth cup.

As far as a parallel account I do not have time to lay one out for you, but the internet, or better yet a book on the Synoptic Gospels would give the account much quicker than I could copy it…… Here is a website: Synoptic Parallels. Here are some books:

Dictionary of Jesus and the Gospels: Joel B. Green
Harmony of the Gospels: Loraine Boettner
Jesus According to Scripture: Restoring the Portrait from the Gospels: Darrell L. Bock

Reformed and Always Reforming,