http://lib2.pushkinskijdom.ru:80/authors/%D0%BC-%D0%B4-%D1%8D%D0%BB%D1%8C%D0%B7%D0%BE%D0%BD-%D1%81-%D0%BF%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3М. Д. Эльзон (С.-Петербург).http://lib2.pushkinskijdom.ru:80/%D0%BF%D0%B8%D1%81%D1%8C%D0%BC%D0%B0-%D0%BD-%D0%BA-%D0%BD%D0%B8%D0%BA%D0%BE%D0%BB%D1%8C%D1%81%D0%BA%D0%BE%D0%B3%D0%BE-%D0%BA-%D1%8E-%D0%B3-%D0%BE%D0%BA%D1%81%D0%BC%D0%B0%D0%BD%D1%83-%D0%B2-%D1%81%D0%B0%D0%BD%D0%BA%D1%82-%D0%BF%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3%D1%81%D0%BA%D0%BE%D0%BC-%D1%84%D0%B8%D0%BB%D0%B8%D0%B0%D0%BB%D0%B5-%D0%B0%D1%80%D1%85%D0%B8%D0%B2%D0%B0-%D1%80%D0%B0%D0%BDПисьма Н. К. Никольского к Ю. Г. Оксману в Санкт-Петербургском филиале Архива РАНThu, 16 May 2019 10:25:49 GMThttp://lib2.pushkinskijdom.ru:80/%D0%BF%D0%B8%D1%81%D1%8C%D0%BC%D0%B0-%D0%BD-%D0%BA-%D0%BD%D0%B8%D0%BA%D0%BE%D0%BB%D1%8C%D1%81%D0%BA%D0%BE%D0%B3%D0%BE-%D0%BA-%D1%8E-%D0%B3-%D0%BE%D0%BA%D1%81%D0%BC%D0%B0%D0%BD%D1%83-%D0%B2-%D1%81%D0%B0%D0%BD%D0%BA%D1%82-%D0%BF%D0%B5%D1%82%D0%B5%D1%80%D0%B1%D1%83%D1%80%D0%B3%D1%81%D0%BA%D0%BE%D0%BC-%D1%84%D0%B8%D0%BB%D0%B8%D0%B0%D0%BB%D0%B5-%D0%B0%D1%80%D1%85%D0%B8%D0%B2%D0%B0-%D1%80%D0%B0%D0%BD