No need to put "dissolved," on your resume. Someone reading it won't know wtf you mean by that - trust me - I read peoples resumes when they apply for jobs.
Either put it as "Head Courtesy Clerk," and leave it at that. IF anyone ever called a reference and was told that title had been changed blah blah, it's easily explainable that it's the title you held for years and you never changed it on your resume because your job responsibilities never changed, only your title when the company decided to change it.
I also don't think anyone's EVER going to dive that deep into the semantics of whether your title was Head Courtesy Clerk or Courtesy Clerk or Courtesy Clerk Team Lead or Senior Courtesy Clerk etc. Literally write whatever YOU want on your resume and just roll with it. What an employer is going to care about is what you actually DID in your job duties and responsibilities, not what label was given to you by your employer.
If I were you I would just leave it as "Head Courtesy Clerk," on my resume because it does sound a little better than just "Courtesy Clerk," and indicates you had higher than entry level responsibilities and likely were a longer term employee. I can't imagine a scenario where a prospective employer is going to call up your references and be told that your title changed at some point when the company dissolved the position of "Head Courtesy Clerk," blah blah blah. It's more likely going to be "Oh yeah, that guy - he was with us for X time and was responsible for this. Good worker, got along with people, very punctual, pleasure to have around, and we knew we could always count on him to help train new hires to ensure they knew how to do things the company way."
If I were making that phone call to your old employer to check references and the person on the other phone got into some stupid side conversation about how the company got rid of that particular job title so it Should Read "Courtesy Clerk," I would be annoyed at their wasting my time with irrelevant nonsense when what I really want to know is what your attitude and aptitude are like and what your job performance was. The people answering the phone are likely socially aware enough not to get into stupid side conversations like that making themselves look like petty morons for sidetracking a business discussion with stupid crap about the history of their companies' job title changes.
Just leave it and don't worry about it At All IMO.
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for supporting trump. Because doing so is deplorable.