Pete Mahovlich trades
| Detroit Red Wings acquire | Date | Pittsburgh Penguins acquire | ||
|---|---|---|---|---|
 | Pete Mahovlich | August 3, 1979 | Nick Libett |  |
| Montreal Canadiens acquire | Date | Pittsburgh Penguins acquire | ||
|---|---|---|---|---|
 | Pierre Larouche | November 29, 1977 | Peter Lee | |
| future considerations (rights to Peter Marsh) | Pete Mahovlich | |||
| Montreal Canadiens acquire | Date | Detroit Red Wings acquire | ||
|---|---|---|---|---|
| Bart Crashley | June 6, 1969 | Garry Monahan | |
| Pete Mahovlich | Doug Piper | |||