Hennepin County will be looking for a new library director now that Amy Ryan is headed to Boston.
Boston Public Library trustees Friday announced Ryan's appointment as president of the nation's oldest public big-city library system.
She's the first woman to head the 160-year-old system, a gender barrier that Hennepin County libraries broke back in the 1920s.
"It's a rare opportunity for a librarian to lead the Boston Public Library," said Ryan, whose parents are from suburban Boston. "I think that it was a good match for my experience and knowledge."
Ryan's decision to leave comes nearly eight months after Hennepin County and Minneapolis merged into a 41-library system. There is still substantial work to do to integrate the systems.
But she said she thinks employees are considering it one system.
"It's a loss for us," said Commissioner Gail Dorfman. "She was instrumental in getting us through the merger process. ... I wish she had been in a position to stay longer."
Ryan will be hard to replace because she has a rare combination of high-level administrative experience in both the city and county systems, said Jan Feye-Stukas, a library consultant who worked with Ryan in Minneapolis.