The general brand poster that is meant to provide insight about the museum to viewers. In this case, it highlights major scientific innovations and some breakthrough instruments. The dot texture is the same part of the logo just repeated, scaled, and varies in color; this also is a design element throughout the brand.
Also featured is an application of the poster. The Science History Institute is located in a rather busy sidewalk area, with other museums right up the block and a subway stop at the other end. A sidewalk sign such as the one shown would be placed outside the building to get people to stop and come inside.