Alma 5:2-3

2. And these are the words which he spake to the people in the church which was established in the city of Zarahemla, according to his own record saying:

3. I, Alma, having been consecrated by my father, Alma, to be a high priest over the church of God, he having power and authority from God to do these things, behold, I say unto you that he began to establish a church in the land which was in the borders of Nephi; yea, the land which was called the land of Mormon; yea, and he did baptize his brethren in the waters of Mormon.

So, he wrote his "talk" and we have it today! That's super cool. Makes me wonder if I should write down and keep my talks? (Is that presumptuous or prideful?) (I don't think so? But Satan would probably want me to think so and not do it.)