Another German Pioneer Multi-Cache

This two-stage multi will take you to an historical marker honoring another of the area's German pioneers.  The information required for solving the field puzzle for the second stage is in the text.  

This historical marker details many events in the life of this German pioneer. He donated the land for a school in the area which was eventually "moved closer to the town." Note the YEAR in which this move occurred.  

For the final coordinates solve the following: N 29 38.abc W 098 04.def

a=1st numeral in the date

b=a-d

c=difference between 4th and 3rd numerals

d=c-a

e=f-c

f=difference between 1st and 4th numerals

Cache is a small pill bottle with room for small SWAG. BYOP.  Plenty of parking space at the historical marker. No need to go on private land.