His wife has released a copy of a letter Glasgow wrote three days before he disapeared.
Perhaps the most telling line in the letter refers to tension between executives at CDI and Dillard's Chief Financial Officer, James Freeman.
"For Freeman to come down here and say we are dishonest, hurt us to the core," it reads. It goes on to say, "we have never been so offended in our lives."
The letter suggests that Glasgow wrote intended those words for Dillards, Inc. CEO William Dillard; the letter was actually addressed to William Clark, CEO of CDI -- Glasgow was offering an example of what he would say to Dillard.
Dillards and CDI have both said Glasgow was not suspected of any wrongdoing, but Glasgow's letter reveals that there was tension over accounting practices.
"I'm certainly not suggesting anybody did anything to him from Dillard's," Glasgow family spokesperson Chip Welch said Friday. "But maybe this sheds some light on why he may have gone missing and some people who ought to be asked questions about their whereabouts when they last saw him."
Welch said the Glasgow family continues to urge anyone in the state who may have seen John Glasgow to come forward.