[10] Exhibits present in the 1930s, which are still present in the current building, include the Native American Hall, with a diorama of two Native American men and one woman engaged in tool-making and cooking,[1][11] and Habitat Hall, which features dioramas of taxidermied animals in their natural habitats.

[1] A Bird Hall also existed, with various local specimens and a case of extinct species (including the passenger pigeon, heath hen, and Carolina parakeet).

[1] Although not ready at the time of the museum's 1934 re-opening, the building did leave space for a planetarium, which would ultimately open in November 1937.

[3][12] The museum turned to Chicopee locals Frank and Stanley Korkosz to create the planetarium's "star ball", as they were unable to afford equipment from Zeiss.

[14] Temporary exhibits hosted by the museum have covered a variety of topics, from natural gas (1993),[15] to extinction (1998),[16] to the history of bicycles (2002).

[19] The hall also includes a cast of Stegosaurus, and both a legbone of Alamosaurus and fragment of a tyrannosaurid believed to represent a new species, both collected in a 1920s Amherst College expedition led by Fred Brewster Loomis.

[31][32] The Central Council of Tlingit and Haida Indian Tribes of Alaska announced at the time they intended to request repatriation of the helmet.