This street name might very well be a sneaky reference to Freemasonry. A nameless road laid out in 1926, property owners initially thought to call it “Temple Street” as it led to both a Masonic temple and a planned Elks lodge (now the Kwan Yin meditation temple). They then settled upon Acacia Avenue, ostensibly because it fit in better with Monrovia’s other arboreal street names, but I suspect some of those property owners also knew that the acacia tree is an important symbol for Masons, who believe its wood was used in the Ark of the Covenant and that it signifies the immortality of the soul.