In the very first issue of Card Collectors Bulletin, dated January 1, 1937, Jefferson Burdick printed a "Collectors Directory" listing the names, addresses, and specialties of 15 card collectors. They were all apparently among the 55 people to whom Burdick had sent this first issue of the Bulletin, but he only included people who had given their permission. In the second Bulletin a month later, he listed five more collectors, but said that others had said they did not want to be listed. Bulletin #3 a month later included four more names, but Bulletin #4 a month after that did not include any additions to the directory. These three lists are in the first three scans below.
When Burdick revived the Bulletin almost a year later on March 1, 1938, he listed seven new names for the directory, and address changes for five others (including himself). The newcomers included Howard M. Myers, who around this time was compiling the first-ever T206 checklist which Burdick later printed in 1941 (see here:
http://www.net54baseball.com/showthread.php?t=239973), and James N. Colkitt, whose collection Burdick auctioned off in 1943 in the first-ever card auction (as I wrote about here:
http://www.net54baseball.com/showthread.php?t=239891). Each of the three additional issues of the Bulletin that Burdick published in 1938 included more names for the Collectors Directory. The June 1, 1938 issue (#6) listed Lionel Carter and Harry Lilien, both of whom did a ton of great research on card sets over the years. The four 1938 additions to the Directory are also below.
After writing and then publishing the United States Card Collectors Catalog in the first half of 1939 (see here:
http://www.net54baseball.com/showthread.php?t=241036), Burdick again began publishing The Card Collector's Bulletin (now with an apostrophe!) on August 1, 1939. In the April 1, 1940 issue (#5) of the new CCB, Burdick published a new Directory consisting of 34 names, many of whom had been listed in 1937-38 but some of whom had not. He lamented that this was less than a third of Bulletin subscribers, and promised "an additional long listing" in the next issue. The June 1, 1940 issue did list 12 more names, including Charles Bray (who would take over the Bulletin from Burdick nine years later), and Howard M. Myers and John D. Wagner from the 1937-38 list. The next issue (August 1, 1940) listed three new names and a change of address, but after that there were no more additions to the Directory. Burdick mentioned the reason why six years later in a short item in the February 1, 1946 CCB. He says that "years ago we did print a Directory of collectors, getting the express permission of each name printed. We found that many collectors did not wish to have their name and address mentioned in any way and so long since abandoned any extension of the idea."
