The Epistle of St. Ignatius to Polycarp - Shorter version. J.B. Lightfoot translation. - http://wesley.nnu.edu/biblical_studies/noncanon/fathers/ante-nic/ignatius/polycarp.htm
Epistle to Polycarp, Syriac Version - From The Ante-Nicene Fathers, vol. 1 (American edition). In HTML, at Christian Classics Ethereal Library. Roberts-Donaldson translation. - http://www.ccel.org/fathers2/ANF-01/anf01-24.htm
Epistle to Polycarp, Shorter and Longer Versions - Both in one HTML file, at Christian Classics Ethereal Library. For each paragraph, the shorter version is followed by the longer version. From The Ante-Nicene Fathers, vol. 1 (American edition). Roberts-Donaldson translation. - http://www.ccel.org/fathers2/ANF-01/anf01-22.htm