(Shelburne, VT: New England Press, 1985) ISBN 0-933050-31-3 (Originally published in 1979 by Concordia Publishing House, ISBN 0-570-03620-8).
«Snowflake Bentley: Man of Science, Man of God.» (Shelburne, VT: New England Press, 1985) ISBN 0-933050-31-3 (Originally published in 1979 by Concordia Publishing House, ISBN 0-570-03620-8).