Regimen: Each injection will be administered to patients with clinical stage I or II melanoma, who have had complete excision of a primary melanoma, but prior to wide excision with or without sentinel node biopsy as definitive surgical therapy.
In Stage 1: Patients will be injected with a 1 ml emulsion containing GM-CSF in saline plus Montanide ISA-51 adjuvant, in skin adjacent to a melanoma biopsy scar.
In Stage 2: Patients will be randomized to receive an injection of one of the following in skin adjacent to the melanoma biopsy scar:
1. 1 ml saline
2. GM-CSF in 1 ml saline
3. an emulsion of Montanide ISA-51 adjuvant and saline
4. an emulsion of GM-CSF in saline plus ml Montanide ISA-51 adjuvant. All vaccines will be administered intradermally. After the injection, each patient will undergo wide excision of the melanoma site, with or without sentinel node biopsy, as clinically indicated.