Dubuque-based Woodward Communications Inc., owner of Des Moines-based Two Rivers Marketing, has purchased Canada-based marketing firm ON Communication. "Two Rivers Marketing serves industry-leading clients in the agricultural, construction, transportation and industrial markets, according to a release. "ON Communication specializes in design, interactive media and online marketing services. The acquisition creates opportunities for both agencies to collaborate and serve new markets." ON Communication, with 23 employees, will continue to be based in Ontario.