The team's roster was composed entirely of African Americans, hired from the two premier black professional clubs of the time, the Cuban Giants of Trenton, New Jersey, and the New York Gorhams.
Catcher Arthur Thomas hit .333, led the league in doubles and triples, and had the second-highest slugging percentage (.567).
Pitcher / outfielder William Selden led the team with 15 wins and a 2.62 earned run average while batting .330.
[4] While the players were black, the ownership group and the team's business manager, J. Monroe Kreiter, were white men from Harrisburg, Pennsylvania.
When the Eastern Interstate League collapsed, they moved the team's base of operations to Harrisburg (while retaining the York name), and the Monarchs finished the season as an independent club.