The present disclosure is drawn to a base paper substrate that is cellulose-based and an ink-receiving layer on the base paper substrate. The ink-receiving layer, for example, includes a metal salt, inorganic particulates, a polymeric binder, and an emulsifier including a hydroxylated saturated hydrocarbon block including from 6 to 24 carbon atoms and a hydroxyl group and further includes a polyalkylene oxide block including form 10 to 35 polyalkylene oxide units selected from polyethylene oxide, polypropylene oxide, or a combination thereof.