McClellan worked as a Congregationalist minister and as a high school teacher and principal. His writing, generally self-published, addresses religion, nature, and romantic love while only occasionally revealing an emotional struggle against racial discrimination.

The sun went down in beauty Beyond the Mississippi side, As I stood on the banks of the river And watched its waters glide; Its swelling currents resembling The longing restless soul, Surging, swelling, and pursuing Its ever receding goal. The sun went down in beauty, But the restless tide flowed on, And the phantom of absent loved ones Danced on the waves and were gone; Fleeting phantoms of loved ones, Their faces jubilant with glee, In the spray seemed to rise and beckon, And then rush on to the sea. The sun went down in beauty, While I stood musing alone, Stood watching