Pic1-second row center stamp and Pic 3-last stamp. are both 'box cancels' that were handstamped, usually on parcels or shipping tags. The first one is indistinct and the one in pic 3 is most probably from one of these 3 post offices in Pennsylvania (Blue Ball, Blue Bell or Blue Ridge).
Pic 2-second row first stamp is Scott # 1050 with what looks like an Emmitsburg, MD CDS
Pic4-first stamp. Is a roller cancel (on Scott # 820 also predominately applied to parcels where large numbers of stamps needed to be cancelled.
Pic 6-first stamp is Sc# 825 with an indistinct cancellation.
14 cent blue has cancel from Rhinelander Wis.......(4th scan, 14 cent Pierce presidential) but its not a precancel. 5th scan there are two 1 cent green Washington presidentials that if you put them end to end spell out "Church Street(?) Annex(?)" chances are they came off the same cover, because they line up perfectly.