Ambie posted new video, this time she talks about full and incremental capitalization: https://www.youtube.com/watch?v=UNGy41yEHTU
Ambie interviews Josh Star of Grand Trunk Games (future publisher of 1861/1867): http://www.boardgameblitz.com/posts/199/episode-80-interview-with-josh-starr
Isaac Childres (Gloomhaven designer) talks about 18xx games: http://www.cephalofair.com/2019/05/of-heavycons-and-railroads.html