Square Slabserif 711 family (Bitstream library) contains 6 fonts.
Square Slabserif 711 Pro Light
Square Slabserif 711 Pro Light Italic
Square Slabserif 711 Pro Medium
Square Slabserif 711 Pro Medium Italic
Square Slabserif 711 Pro Bold
Square Slabserif 711 Pro Bold Italic
Font collection on Fonts-online.com Alphabet font list