De Rebus Antiquis Et Novis posts episodes from Mikhail Bulgakov's Master and Margarita that feature Nikolay Bukharin (portrayed in the novel as “Nikolay Ivanovich, a ‘tenant from the ground floor'”). Also, there's a related item on the 1938 Trial of the 21 – co-authored by Dmitry Minaev for ExecutedToday.com.