Dental Economics magazine, Jul., 1979, a Coe Laboratories ad showing several impression trays. |
Dental Hygiene magazine, vol. 53, No. 7, Jul., 1979, p. 334. |
RDH magazine, Jul./Aug. 1986, p. 44. |
Dental Hygiene magazine, vol. 53, No. 6, Jun., 1979, Sybron/Kerr ad for a disposable fluoride tray. |
The Journal of the American Dental Association, vol. 98, No. 2, Feb., 1979, Cutter Laboratory ad showing an impression tray. |
The Journal of the American Dental Association, vol. 98, No. 3, Mar., 1979, Coe Laboratories ad showing an impression tray. |