E. Frances Paper greeting cards strike a nostalgic note. There are hundreds of designs, and dozens are food-centric with charming illustrations and witty, poignant messages. Sisters Ali Flippin and Jenni Laundon, along with their cousin Emily Roberts, founded the Newport, R.I., company they named after the sisters’ grandmothers, Elizabeth and Frances, and work from a renovated garage. The trio brainstorms to conjure up the text, musing about personal experiences. Flippin, who studied at the Massachusetts College of Art and Design, creates the images that start as original hand-painted watercolors.