Abstract: A method of making a filtering face mask, which method comprises: (a) providing a mask body that is adapted to fit over the nose and mouth of a person, the mask body comprising a filtration layer and having an opening through which exhaled air can pass without having to pass through the filtration layer, the opening being located directly in front of where the wearer's mouth would be when the face mask is being worn; and (b) attaching an exhalation valve to the mask body at the opening; wherein the attached exhalation valve comprises: (i) only one flexible flap that has only one stationary portion, only one free portion, a generally uniform thickness, and a peripheral edge, the peripheral edge having a stationary segment that is associated with the one stationary portion and a free segment that is associated with the one free portion; and (ii) a valve seat that has a flap-retaining surface, a seal surface, and an orifice that comprises a plurality of openings through which plurality of openings exhaled air ma

Abstract: A display board that may be supported on an easel stand includes a panel having a display surface on a front side thereof. A mounting interface is positioned adjacent a top edge of the panel and is configured for engagement with any one of a plurality of unique easel stand securing means.