Complex sentence: In 1935, through his congressman, he had legislation introduced into the House of Representatives for a commemorative coin in honor of Elgin's centennial that year, which would both depict and be a source of funds for his memorial to the pioneers.
Split into simpler sentences: In 1935, through his congressman, he had legislation introduced into the House of Representatives for a commemorative coin in honor of Elgin's centennial that year. Rovelstad hoped that the proposed coin would both depict and be a source of funds for his memorial to the pioneers.