Tarkill Interpretive Trail Mystery Cache

Finish the puzzle below to find the actual cords. This is a self interpretive trail placed here by an eagle scout group and maintained by DCNR. It is a 6/10 mile loop. At the start of the trail there are brochures in a booth with a logbook for the DCNR. These brochures are your guide to this trail and solving this puzzle cache.

N41 1a.bcd
W0db 0c.bae
These letters relate to the station where each of these topics is first explained:
a=Rhododendron's
b=root crowning
c="porkie" home
d=hydrologic cycles explained
e=The mighty mighty oak trees
In case there are no brochures at the trail head we will put them in .jpg format below. I promise it will be more fun if you still solve the puzzle on the trail and not at home! Also please post a picture of you or your group next to the coolest tree you see out here to receive your smiley!