Conversation so far:
What did Vladimir do in the United States?
The Nabokovs settled in Manhattan and Vladimir began volunteer work as an entomologist at the American Museum of Natural History.
Did he do other work after that?
Nabokov joined the staff of Wellesley College in 1941 as resident lecturer in comparative literature.
Did he like this job?
The position, created specifically for him, provided an income and free time to write creatively and pursue his lepidoptery.
Did he stay at Wellesley?
The Nabokovs resided in Wellesley, Massachusetts, during the 1941-42 academic year.
In September 1942 they moved to Cambridge where they lived until June 1948.
What happened after 1948?
Following a lecture tour through the United States, Nabokov returned to Wellesley for the 1944-45 academic year as a lecturer in Russian.
Did he like teaching Russian?
Wellesley's one-man Russian Department, offering courses in Russian language and literature.
His classes were popular.
How long did he teach for?
Nabokov left Wellesley in 1948 to teach Russian and European literature at Cornell University, where he taught until 1959.
What did he do after leaving those jobs?
Nabokov wrote Lolita while travelling on butterfly-collection trips in the western United States that he undertook every summer.
Did anything interesting happen while writing Lolita?
Vera acted as "secretary, typist, editor, proofreader, translator and bibliographer; his agent, business manager, legal counsel and chauffeur.
What else did Vera do?
his research assistant, teaching assistant and professorial understudy"; when Nabokov attempted to burn unfinished drafts of Lolita.

Question: Did anything else happen?
Self-contained rewrite: Did anything else happen other than getting help from Vera?