Death:Death by Disease 4 February 2009 (Pulmonary fibrosis, age 86) chart Placidus Equal_H.
American businessman, the chairman and chief executive officer of Texas Instruments. He was in attendance at the demonstration of the integrated circuit by Jack Kilby on 12 September 1958. Shepherd died at age 86 on 4 February 2009 at his ranch in Quitman due to complications of pulmonary fibrosis. Link to Wikipedia biography
Information about a public figure named Shepherd Mark born on January 18, 1923, in Dallas, United States, is unfortunately very limited based on readily available online resources. It is possible that this individual maintained a lower public profile, or the name may be slightly different. Records for individuals born in this era can sometimes be challenging to access digitally.
It's important to be aware that finding information about individuals from this time period often requires patience and persistence. Combining different research methods and being creative with search terms can significantly increase your chances of success.
If Shepherd Mark held a professional role or had public affiliations (e.g., membership in organizations, publications), focusing research on those areas could also be beneficial.
If more specific details about his profession, possible relatives, or areas of interest were known, the search could be refined further. For example, if he was a doctor, searching medical directories or publications from the mid-20th century might provide leads.
This information is based on publicly available data and is intended to offer guidance for further research. Privacy considerations are important, and it's essential to approach research ethically and responsibly.
```