Dewey numbers for LGBTI topics have been and at times continue to be homophobic, reflecting the society and times in which the numbers are developed, from the nineteenth century to present. Melvil Dewey, a man so obsessed with efficiency he shortened the spelling of his first name and considered spelling his surname as ‘Dui’, invented Dewey decimal classification in 1876. Given the nineteenth century origins of DDC, many have noted the inherent cultural bias including a Christian concentration, racism, sexism and homophobia.