Stock Photography Site Is To Offer Free Coaching - Osceola, WI. The sizzling summer days of July have settled into the hinterlands of western Wisconsin where PhotoSource International operates out of a red barn – and has since 1976. “It’s cool in the barn in summer,” says Rohn Engh, director of PhotoSource International, where he is again conducting his annual summer sale of his market letters, PHOTOLETTER and PHOTODAILY. Engh is offering the usual discounts on July 14th and 15th, but this year he’s offering a cool bonus for photographers who sign up for 2 years – a free half hour coaching session with Engh who has experienced the volatile changes in stock photography over the last three decades. The PHOTOLETTER and PHOTODAILY are marketletters that pair picture buyers at book and magazine publishers with freelance stock photographers who are able to sell directly to photo editors, graphic artists and researchers.