My Introduction to 1. d4

I recently came across some PGNs of a few old games of mine back when I was initially learning to use, and defend against 1. d4, along with two of my friends and chess colleagues. Back then, each of us (primarily 1. e4 players) had a different choice as white (2. c4 vs 2. e3) as well as black (Semi Slav vs Horwitz Defense vs. Albin Counter Gambit). The following are three of my earliest Queen Pawn Games, and were played one after the other on the same day, in the same sequence, many years ago:

Game 1: