A weekly Tumblr series, “Matt Henson Monday,” written by The Peary-MacMillan Arctic Museum to honor the first African American explorer of the Arctic, has been attracting much attention. So far almost 4,000 people have liked or reblogged the series, which will conclude at the end of February.

Matt Henson first sailed with Robert Peary to the Arctic in 1891, and they went on to make five more expeditions together. Visit the Museum’s blog.