What I say about birthday card
The parent company, Blue Mountain Arts, was officially formed in 1971. With the posters popularity, Stephen and Susan began travelling the country selling their art and soon branched out into gift books, calendars and stationery. Not long afterwards, they also transferred their art to Blue Mountain greeting cards. Blue mountain cards, in fact, introduced the all occasion blank greeting card to the public. The company was also responsible for introducing expressive free form poetry to their cards, replacing the traditional, formal rhyming messages used up to that point.