s . ▁ ▁Biography ▁Born ▁in ▁And over , ▁Maine ▁to ▁S ylvan us ▁and ▁Mary ▁( M err ill ) ▁Po or , ▁he ▁was ▁the ▁first ▁of ▁his ▁family ▁to ▁attend ▁college , ▁gradu ating ▁from ▁Bow do in ▁in ▁ 1 8 3 5 . ▁He ▁was ▁desc ended ▁from ▁General ▁En och ▁Po or ▁of ▁the ▁Revolution ary ▁War . ▁He ▁joined ▁his ▁uncle ' s ▁law ▁firm , ▁being ▁called ▁to ▁the ▁bar ▁in ▁ 1 8 3 8 . ▁Later ▁Henry ▁and ▁his ▁brother ▁John ▁established ▁a ▁law ▁practice ▁in ▁Bang or , ▁Maine . ▁By ▁invest ing ▁money ▁in ▁Maine ' s ▁growing ▁tim ber ▁industry , ▁the ▁Po or ▁brothers ▁made ▁a ▁fortune . ▁John ▁Po or ▁became ▁a ▁minor ▁railway ▁magn ate ▁in ▁association ▁with ▁the ▁European ▁and ▁North ▁American ▁Railway , ▁and ▁was ▁heavily ▁involved ▁in ▁the ▁building ▁of ▁the ▁Maine ▁rail ▁network . ▁ ▁In ▁ 1 8 4 9 , ▁John ▁purchased ▁the ▁American ▁Rail road ▁Journal , ▁of ▁which ▁Henry ▁became ▁manager ▁and ▁editor . ▁In ▁ 1 8 6 0 , ▁Henry ▁Po or ▁published ▁History ▁of ▁Rail ro ads ▁and ▁Can als ▁in ▁the ▁United ▁States , ▁an ▁attempt ▁to ▁compile ▁compreh ensive ▁information ▁about ▁the ▁financial ▁and ▁oper ational ▁state ▁of ▁U . S . ▁rail road ▁companies . ▁He ▁later ▁established ▁H . V . ▁and ▁H . W . ▁Po or ▁Co . ▁with ▁his ▁son , ▁Henry ▁William , ▁and ▁published ▁annual ▁updated ▁versions