They are there…you just need to look at it more…and look at them at a vastly different angle…away from the protestant angle.
The following articles give a view of early Church history and practices…and the Jewish roots of the communion of saints, for after all, Jesus and the apostles were Jews:
In this article below, you will find out that it was actually the pagans who abhorred the early Christians practice of the communion of saints:
calledtocommunion.com/2012/08/relics-saints-and-the-assumption-of-mary/
The first real blow to this interpretation came when I read Peter Brown’s book, The Cult of Saints: Its Rise and Function in Latin Christianity.
Brown challenged my view that the place of saints and relics in the church was a mere holdover from paganism, and that the practice was somehow peripheral to true Christianity. Instead, Brown painted a picture of ancient Christianity and paganism in which relics were indispensable to the former, and repulsive to the latter. Far from a holdover from paganism, the place of relics in the Church appeared as something intensely Jewish, Hebraic, and Old Testament. Pagans, like Julian-the-Apostate, found the practice revolting and legislated against it. (Paganism, with its notions of ritual purity, had strictly delimited the realm of divine worship and neatly separated it from the realm of corpses and the dead.)
And the article below gives the Jewish practice, to this day of asking for intercession from those who have passed to the afterlife:
chabad.org/library/article_cdo/aid/562222/jewish/Is-it-okay-to-ask-a-deceased-tzaddik-to-pray-on-my-behalf.htm/mobile/false
Is it okay to ask a deceased tzaddik to pray on my behalf?
Question:
I was always under the impression that Judaism firmly believed that there are no intermediaries between man and G d, and to pray to the deceased is blasphemous and outlawed by the Bible. If so, why is it permissible to ask the Rebbe to intercede on one’s behalf at the Ohel?
Answer:
Yes, Jewish customs can be perplexing. Judaism is all about having a direct connection to G-d. An intermediary is a form of idolatry (see “Unidolatry” for more explanation of why this is forbidden.). Yet for as long as there are records, Jews have been in the habit of asking righteous men and women to have a chat with G-d on their behalf.
We see that the Jewish people asked Moses to intercede many times and he accepted their request. If he hadn’t, we wouldn’t be here–so G-d obviously figured it was okay. The Talmud (Baba Batra 116a) tells us that “If there is someone ill in your house, go to the wise man of the city and ask that he should pray for him.” Of course, this person also needs to pray for himself, as his family should as well–and any Jew who knows that another Jew is ill should pray for him. But you need to go to that wise man as well.
Just how ancient and popular is this custom? The Torah tells us that Caleb, one of the twelve spies that Moses sent to spy out the Land of Canaan, made a personal detour to Hebron. What was his interest in Hebron? The Talmud (Sotah 34b) tells that he wished to pray at the cave where Abraham, Sarah, Isaac, Rebecca, Jacob and Leah are buried. He prayed there for mercy on his soul and he was saved from the fateful decision of the other spies.