A couple of observations, curiously, JD Tippit's former partner, one of six pallbearers at his funeral, married a twice divorced woman, in 1959 who was old enough to be his mother. I cannot find that Holley Mack Ashcraft's wife was related to DPD officer Mar(r)ion L Baker.
https://www.findagrave.com/memorial/18714327/thelma-pauline-ashcraftI cannot find Acquilla Clemmons or her employer, "Mrs. Smothers", in any documents after 1963. A Cornelia Smothers, presumably the mother-in-law of "Mrs. Smothers" lived with the couple from 1961 to 1963 and worked at a dry cleaners as a presser. I strongly suspect the Smothers were also black and that segregated Dallas degraded the quality of DPD and FBI "investigation" of the JFK, Tippit, and Oswald murders.
https://www.maryferrell.org/showDoc.html?docId=60308&search=acquilla_and+tenth#relPageId=69&tab=pageThe point illustrated in the images above is that the FBI excused itself from interviewing Acquilla Clemmons on the grounds her name was not in the 1963 or 1964 Dallas City Directory and with reliance on a third party observation her story seemed vague.
They did not bother to interview her East Tenth St. employer, "Mrs. Smothers", who was in the 1963 city directory.
Trust was however, highly placed in the testimony of Virginia Davis and taxi driver Whaley, both lied about their age, Mrs. Davis, under oath, and the testimony of Earline Roberts. Mrs. Roberts was disqualified by her employer Gladys Johnson, as a compulsive "story teller". Indeed, the record indicates Mrs. Roberts estimated the arrival of the DPD as "1:30", while detective Potts claimed to be the first officer to arrive, at 3:00 PM!
Despite these inconsistent criteria of weighing the importance and potential importance of witnesses and expenditure of investigative resources, neither the FBI or DPD, AFAIK, never bothered to identify and interview this person to attempt to corroborate the timing of Oswald's post TSBD movements....
https://mcadams.posc.mu.edu/russ/testimony/robertse.htm
...Mrs. ROBERTS. I had better back up a minute---he came home that Friday in an unusual hurry.
Mr. BALL. And about what time was this?
Mrs. ROBERTS. Well, it was after President Kennedy had been shot and I had a friend that said, "Roberts, President Kennedy has been shot," and I said, "Oh, no." She said, "Turn on your television," and I said "What are you trying to do, pull my leg?" And she said, "Well, go turn it on." I went and turned it on and I was trying to clear it up---I could hear them talking but I couldn't get the picture and he come in and I just looked up and I said, "Oh, you are in a hurry." He never said a thing, not nothing. He went on to his room and stayed about 3 or 4 minutes.....