They taught in the fledgling Wisconsin Synod seminary in Wauwatosa, Wisconsin in the early part of the 20th century (roughly 1900 - 1930). Their names were J.P. Koehler (pictured), August Pieper and John Schaller. Highly gifted, and perhaps a bit outspoken (Koehler was kicked out in 1929), their spirit and devotion to Scripture is now looked on as representing the golden age of the WELS.
What made them unique within conservative Lutheranism was their antipathy toward blind dogmatism based on the work of prior theologians (repristinating), openness to being taught by Scriptural authority and renewed emphasis on Biblical exegesis. In the words of Pieper: