Rink Rat by Don MacMillan was first published in 1949 by J.M. Dent (Canada). Harlequin's edition came out in 1950 and was reprinted in 1951 and 1957, the second time with the new number 408 but same cover.
Here is a connection to Rink Rat by the author of a recent Harlequin novel about hockey.
Harlequin 78 - 1950
Harlequin 78 back
CBL 17 - June 1966
CBL 17 back