St. Dominic Catholic Church (Washington, D.C.) opened on March 19, 1854. It was set in an area of the city known as "The Island" because, at that time, a canal ran where Constitution Ave. is today which connected the Potomac and the Anacostia Rivers. As the congregation grew it was recognized that a new sanctuary was needed to hold all the congregants. This new church was dedicated on June 13, 1875 by Most Rev. James Roosevelt Bayley, Archbishop of Baltimore. After President James A. Garfield was shot by Charles J. Guiteau on July 2, 1881, St. Dominic's joined other local churches in an "Appeal to Heaven"
Charles J. Guiteau storage by the museum. Parts of Guiteau's brain remain on display in a jar at the Mütter Museum in Philadelphia. Dr. Allan McLane Hamilton said in 1881 that he believed that Guiteau was sane when he assassinated Garfield. An autopsy of Guiteau's brain revealed that his dura mater was abnormally thick, suggesting he may have had neurosyphillis, a disease which causes mental instability; he could have contracted the disease from a prostitute. George Paulson, formerly the chair of neurology at Ohio State University, disputed the neurosyphillis diagnosis, arguing that Guiteau suffered from both schizophrenia and "grandiose narcissism". In 2014, the