| Number | Name | Date | Kind |
|---|---|---|---|
| 4262865 | Smith | Apr 1981 | A |
| 4337913 | Booth | Jul 1982 | A |
| 4428102 | Brownell | Jan 1984 | A |
| 5423292 | Hall | Jun 1995 | A |
| 5432955 | Plotka et al. | Jul 1995 | A |
| 5595143 | Alberti | Jan 1997 | A |
| 6042440 | Ettl | Mar 2000 | A |
| Entry |
|---|
| The American National Red Cross, The Rescue Tube, Lifeguarding Today, 1995, p. 105, Mosby Lifeline, St. Louis, MO, USA. |