Civil War Veteran Berger's in the Newark, NJ area

I am trying to locate the burial place for Civil War veteran Louis Berger who died 4/15/1919. Also there is an Edward Berger who died in January, 1913 in the US Soldiers Home in Washington, DC. His body was brought back for burial 1/27/1913 to Woodland Cemetery in Newark. He may or may not have been a Civil War veteran which is what I am trying to verify. Edward was 91 when he died (b-1822) which would have made him a little long in the tooth for a CW vet, but he might have been nonetheless.