Nine Pittsburgh-area cultural organizations are thanking supporters by offering free admission to members of the following participating museums on select dates next month. In other words, members of any participating museum gets free admission at any of the other eight on designated days.

Free admission extends to two adults and four children.

They (and the dates) are:

• Westmoreland Museum of American Art, Feb. 1
• Carnegie Museums of Pittsburgh, Feb. 2
• Sen. John Heinz History Center, Feb. 8
• Mattress Factory, Feb. 9
• Children’s Museum of Pittsburgh, Feb. 15
• Frick Art & Historical Center, Feb. 16
• Pittsburgh Zoo & PPG Aquarium, Feb. 17
• Phipps Conservatory and Botanical Gardens, Feb. 22
• National Aviary, Feb. 23