Complex sentence: Carlos Avery, a 1881 graduate of Hutchinson (MN) HS was Minnesota's first game and fish commissioner (1917-1923), and a staunch advocate for enlarging refuge areas.
Split into simpler sentences: Carlos Avery, a 1881 graduate of Hutchinson (MN) HS. Avery was Minnesota's first game and fish commissioner (1917-1923), and a staunch advocate for enlarging refuge areas.