This Gemini 4 mission patch was created after NASA started allowing astronauts to create patch designs to illustrate human spaceflight missions, the first of which was done for Gemini V. After the fact and without crew input or approval, patch designs were created for the Mercury single-astronaut missions and the first Gemini dual-astronaut missions.
Astronaut Kjell Lindgren borrowed this Gemini 4 mission patch to take on his International Space Station expedition in 2015. As a spacewalk-qualified astronaut, Lindgren wanted to commemorate the 50th anniversary of the first U.S. spacewalk, which occurred on the Gemini 4 mission in 1965. This patch is one of the first two Museum artifacts flown on a Soyuz spacecraft and the International Space Station.
This one was found at the Museum without documentation, so its donor and history are unknown.
This object is not on display at the National Air and Space Museum. It is either on loan or in storage.