Thank you for the marvelous front-page photo titled "New World for Moscow Readers," Sept. 5. It pictures a family sitting on a bench in Moscow, the father momentarily distracted from reading the new Pravda; the mother also momentarily distracted perhaps by her own worrisome thoughts. But the youngster between them, not for a moment distracted, is totally absorbed in reading - a McDonald's menu! Does this say something about the "new world" for Muscovites?Mavise Crocker, Falmouth, Mass. Letters are welcome. Only a selection can be published, subject to condensation, and none acknowledged. Please address them to "Readers Write," One Norway St., Boston, MA 02115.