Several years ago, here at Pineapple Retro, I managed to get my paws on a regular source for vintage greeting cards, these are genuine 1970s unused vintage, and came from a guy who used to supply to shops back in the day.
I buy hundreds of them at a time, and started to investigate the designers (names on the reverse of each)
One designer grabbed my attention, Gwyneth Mamlok.
She has a cartoon style of illustration, and almost child like. I recently discovered a tea towel also by her, and books with illustrations... thus begins another obsession I fear!