Could magazine subscriptions expose Los Alamos?

Did a science-fiction magazine realise something secret was happening at Los Alamos because so many subscribers moved there?

Possibly; one or more publications may have noticed prominent subscribers moving to Los Alamos, but the magazine's identity remains uncertain.

A viewer recalls a story that a publication inferred secret work at Los Alamos after prominent technical subscribers disappeared to the same place. A science or science-fiction magazine may have noticed the pattern, but the publication's identity remains uncertain. Aggregate administrative data can betray a secret without revealing any classified content. Concentrating specialists creates observable patterns even when their actual work remains hidden.