| BQ |
Bouquet Romance |
| CER |
Candlelight Ecstacy Romance |
| CES |
Candlelight Ecstacy Supreme |
| CI |
Candlight Intrigue |
| CR |
Candlight Romance |
| CRG |
Candlelight Regency |
| HA |
Harlequin American |
| HBZ |
Harlequin Blaze |
| HD |
Harlequin Duets |
| HH |
Harlequin Historical |
| HHS |
Harlequin Historical Subscription |
| HI |
Harlequin Intrigue |
| HM |
Harlequin Masquerade |
| HMR |
Harlequin Medical Romance |
| HP |
Harlequin Presents |
| HPS |
Harlequin Presents Home Subscription |
| HRG |
Harlequin Regency |
| HR |
Harlequin Romance |
| HRS |
Harlequin Romance Home Subscription |
| HS |
Harlequin Superromance |
| HT |
Harlequin Temptation |
| KS |
Kismet |
| L&L |
Love & Laughter |
| LI |
Love Inspired |
| LV |
Loveswept |
| PGH |
Precious Gem Historical |
| PGR |
Precious Gem Romance |
| Prom |
Promise Romance |
| RR |
Rapture Romance |
| SCL |
Second Chance at Love |
| SCLR |
Second Chance at Love Regency |
| SD |
Silhouette Desire |
| SIM |
Silhouette Intimate Moments |
| SR |
Silhouette Romance |
| SS |
Silhouette Shadows |
| SSE |
Silhouette Special Edition |
| SYT |
Silhouette Yours Truly |
| TAP |
Tapestry |
| VAL |
Valentine Romance |
| VG |
Velvet Glove |
| WMEB |
World's Most Eligible Bachelor |
