Lockwood is best remembered as a touring socialist enthusiast who illustrated and published about a dozen propaganda pamphlets during the first fifteen years of the 20th century.

[2] The brightly decorated wagon was painted by Lockwood and he produced a series of cartoon placards to help illustrate the political oratory delivered by himself and A. S. Edwards, editor of the socialist weekly newspaper The Coming Nation, who was also a convention delegate.

[2] Lockwood saw the propaganda wagon as an important innovation — one which he would use with regularity over the next two decades — declaring to the press that "We are socialists and we want to spread the doctrine of cooperation rather than competition.

"[2]Lockwood and his associates were advocates of the Social Democracy establishing a "wagon brigade" of similar propaganda vehicles to bring the new political party's message to small communities across the United States.

[6] Lockwood's papers are housed at the Zhang Legacy Collections Center of Western Michigan University, located in his longtime hometown of Kalamazoo.