Held the last Sunday of every month. Participation in the program is free and open to the public: no sign-up is required, and all necessary materials are provided. Visitors may also enjoy free admission to the Museum on these days, regardless of participation in the program. The NSLM reserves the right to cancel or reschedule Sunday Sketch due to any reason, and to limit the number of participants based on accepted health and safety measures. Sessions may be held outdoors, weather-permitting.