Hidden Figures Collaboration Poster. This fun, collaborative activity features portraits of Mary Jackson, Dorothy Vaughan, and Katherine Johnson. It is a perfect accompaniment to your Black History Month, Women's History Month, and/or STEM studies. The final poster features a STEM quote from Katherine Johnson. “ We will always have STEM with us. Some things will drop out of the public eye and will go away, but there will always be science, engineering, and technology, and there will always, alwa