Riverdale's executive producer is Greg Berlanti.
Ivan Doseff -LRB- September 26 , 1884 -- May 3 , 1973 -RRB- was a Bulgarian-American football player and coach of football , basketball , and track .. basketball. basketball. track. track and field. football. American football. He served as the head football coach at Kalamazoo College in 1910 , at Iowa State Normal School -- now the University of Northern Iowa -- from 1919 to 1920 , and at Luther College in Decorah , Iowa from 1921 to 1922 , compiling a career college football record of 12 -- 19 -- 3 .. Kalamazoo. Kalamazoo Hornets football. Iowa State Normal. Northern Iowa Panthers men's basketball. football. American football. Kalamazoo College. Kalamazoo College. University of Northern Iowa. University of Northern Iowa. Luther College. Luther College ( Iowa ). college football. college football. He was born in Bulgaria .. Bulgaria. Bulgaria