Atlas Obscura, www.atlasobscura.com, besøkt 9. januar 2022, «Lowell died in 1916. As his mausoleum was being constructed, his coffin sat out on the hill nearby in a burial vault. He was finally interred in 1923.»[Hentet fra Wikidata]
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Autorités BnF, data.bnf.fr, besøkt 10. oktober 2015[Hentet fra Wikidata]
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