Complex sentence: He and two partners used $1,600 they had raised in capital and issued their first catalog in August 1872 which consisted of an single-sheet price list, listing 163 items for sale with ordering instructions for which Ward had written the copy.
Split into simpler sentences: He and two partners used $1,600 they had raised in capital and issued their first catalog in August 1872. It consisted of an single-sheet price list, listing 163 items for sale with ordering instructions for which Ward had written the copy.