Thank you for mentioning one of my CoinWeek articles (Coin Grading Service Special Labels in the Postmodern Era) in the last E-Sylum. I have to give credit for the term"postmodern era" to my editor, Charles Morgan, who mentioned it when he assigned the article to me. See also the Charles Morgan / Hubert Walker piece "For Coins this is a PostmodernEra (or R.I.P. the Modern Era 1932 - 1982)."

You described the middle part of the article as a capsule history of an aspect of the grading industry, and that was my goal, with the help of generous sources at ANACS, NGC, and PCGS. The fullstory of coin grading, however, has not been told. Michael Schmidt, better known as Conder101 on web forums, wrote the impressive Third Party Grading / Certification Services and Slab /Certificate Varieties in 2003, but the book is out of print and 14 more years of history have passed since its publication. (The book is nearly impossible to find, but the ANA library has a copy.I would love to buy one.) I hesitate to mention that someone should write a book on the history of coin certification for fear that readers will suggest that I become that someone. Cataloging 700+varieties of sample slabs was enough work without trying to learn about every holder and label every made.

Let me also echo some of Dave Harper's points on recruiting middle-aged collectors rather than children. I wrote a CoinWeek piece on this subject "Your Kids Don't Want Your Coins butI Know Someone Who Might." The 50 year old engineer or executive is a better prospect to become a member of our brotherhood than the pre-teen, but finding and nurturing this potential collectoris more difficult than attracting children. Recruiting this prospect takes not broadcasting or selling, but gentle one-on-one effort, with the understanding that most will politely decline to take upa new hobby. The article concludes,

To read the complete CoinWeek articles, see:
For Coins this is a Postmodern Era (or R.I.P. the Modern Era 1932 - 1982).(http://coinweek.com/modern-coins/for-coins-this-is-a-postmodern-era-or-r-i-p-the-modern-era-1932-1982/)
Your Kids Don't Want Your Coins but I Know Someone Who Might.(http://coinweek.com/recent-articles-video/kids-dont-want-coins-know-someone-might/)

To read the earlier E-Sylum article, see:
COIN GRADING SERVICE SPECIAL LABELS (http://www.coinbooks.org/v20/esylum_v20n37a16.html)