from letter to Neeli Cherry, May 10, 1970:
"then at Univ. of New Mexico, where I'm supposed to read Friday night [...] I'm going to read at 2 colleges in Washington."
(Living on Luck, p. 97)
from letter to Sanford Dorbin, June 1970:
"Took the train to UNM and read there [...] plane up to Washington where I read at West. Wash. State College that night, got drunk, insulted profs. got real sick drunk and awakened in an upstairs bedroom at 8:30 the next morning and told we had a long ride to Bellevue for a reading at 11:30 a.m. [...] started reading, dead sick, and the bastards put me on video tape."
(Living on Luck, p. 100)
from letter to Neeli Cherry, June 4, 1970:
"read within 2 weeks at Univ. of New Mexico, West Wash. State College and Bellevue Community College."
(Living on Luck, p. 101)
on the 'Bridge'-reading:
"When his friend Peter Edler invited him to read at The Bridge, a book store off Hollywood Boulevard, Bukowski said yes. The date was set as Friday 19 December, 1969 [...] The evening was such a success, Peter Elder invited Bukowski back the next night to do it all over again."
(Sounes: Locked in the arms, p. 102f)
So, being correct and counting 'The Bridge' as two, the 'Bellevue'-reading was at least his 5th!