Last Updated on 22 September 2023

April Events
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21956 – Booker T. Washington National Monument, VA created
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51941 – Fort Raleigh National Historic Site, NC created
1968 – Saugus Iron Works National Historic Site, MA created
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71866 – Ford’s Theatre, DC acquired
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121929 – Arches National Park, UT created
2016 – Belmont-Paul Women’s Equality National Monument, DC
131937 – Organ Pipe Cactus National Monument, AZ created
141959 – Minute Man National Historic Site, MA created
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161908 – Natural Bridges National Monument, UT created
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181924 – Chiricahua National Monument, AZ created
1958 – Glen Canyon National Recreation Area, UT created
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201832 – Hot Springs National Park, AR created
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221960 – Wilson’s Creek National Battlefield, MO created
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251947 – Theodore Roosevelt National Park, ND created
261938 – Channel Islands National Park, CA created
271962 – Hamilton Grange National Memorial, NY created
2007 – Sand Creek Massacre National Historic Site, CO created
281948 – Fort Sumter National Monument, SC created
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