John K. Tullis was, like James Thomson Tullis, a leather merchant.
Tullis was admitted in 1886 as an original lay member of Glasgow Art Club, and was among those Glasgow painters and architects who in 1891 appended their names to a list requesting that the Corporation of Glasgow buy JW's Arrangement in Grey and Black, No. 2: Portrait of Thomas Carlyle (YMSM 137) (#12326).
He was the author of two books on old age pensions (1892 and 1904). His last address was Inchcape, Dennistoun, Glasgow.
Records of Glasgow Art Club.