Actually I'm answering your question and I'm not accusing anyone. This is common knowledge to anyone that knows their stuff about Calvinism. In Calvinism this refers to the "elect". Here's a little explanation from a Calvinist author.
Election “in Christ.” When Paul speaks of God’s choosing us “in him” (Eph. 1:4, 11), he refers to union with Christ. In these places, Paul says that God chose people before the foundation of the world (v. 4). In every other case when Paul uses the phrase “in Christ,” except for 2 Timothy 1:9, he tells of God’s uniting people to Christ in history. God’s choosing us “in him before the foundation of the world” (Eph. 1:4; see also v. 11) speaks of our union with Christ before creation. But because we did not exist before our creation, Paul speaks of God’s plan to unite us to Christ.
Though Arminianism holds that election “in Christ” means that God chose people for salvation based on his foreknowledge of their faith in Christ, Paul does not speak of a condition that sinners must meet in order for God to choose them. Paul’s words do not speak of human beings’ response, but of God’s sovereign will. It is the same in Ephesians 1:11, where Paul says, “In him we have obtained an inheritance, having been predestined according to the purpose of him who works all things according to the counsel of his will.” The apostle teaches that God not only chose a people for himself, but also chose the means by which he would actually save that people—he would send his Son and Spirit and unite them to Christ in saving grace.
Robert A. Peterson, Election and Free Will: God’s Gracious Choice and Our Responsibility
In answer to your second question I have read quite a bit of his writings here's a few samples from my library.
INSTITUTES OF THE CHRISTIAN RELIGION BY JOHN CALVIN
John Calvin and Henry Beveridge, Institutes of the Christian Religion (Edinburgh: The Calvin Translation Society, 1845).
CALVIN’S CALVINISM A TREATISE ON THE ETERNAL PREDESTINATION OF GOD:
“Whom God did foreknow, he also did predestinate to be conformed to the image of his Son: moreover whom he did predestinate, them He also called; and whom He called, them He also justified; and whom He justified, them he also glorified”
ROM. 8:29, 30
BY JOHN CALVIN
John Calvin and Hendry H. Cole, Calvin’s Calvinism: A Treatise on the Eternal Predestination of God (London: Wertheim and Macintosh, 1856), iii.
Last but not least.
CALVIN’S CALVINISM A DEFENCE OF THE SECRET PROVIDENCE OF GOD:
BY WHICH HE EXECUTES HIS ETERNAL DECREES:
BEING A REPLY TO THE “SLANDEROUS REPORTS” (ROM. 3:8)
OF A CERTAIN WORTHLESS CALUMNIATOR DIRECTED AGAINST
THE SECRET PROVIDENCE OF GOD
BY JOHN CALVIN
ORIGINALLY PUBLISHED AT GENEVA A.D. 1552; AND NOW FIRST TRANSLATED INTO ENGLISH
BY HENRY COLE, D.D.,
OF CLARE HALL, CAMBRIDGE
John Calvin and Henry Cole, Calvin’s Calvinism: A Defence of the Secret Providence of God (Wertheim and Macintosh, 1857), iii.
I guess I could go check my Kindle library, But I think you get the idea.