| Sirpa Häkli, Esse (XV), 1996 Avainsanat: sirpa, häkli, hakli, monotypia, esse, olla, monotype, to be |
| Sirpa Häkli, Esse (XVII), 1996 Avainsanat: sirpa, häkli, hakli, monotypia, esse, olla, monotype, to be |
| Sirpa Häkli, Esse (XVIII), 1996 Avainsanat: sirpa, häkli, hakli, monotypia, esse, olla, monotype, to be |
| Sirpa Häkli, Esse (XIX), 1997 Avainsanat: sirpa, häkli, hakli, monotypia, esse, olla, monotype, to be |
| Sirpa Häkli, Esse (XX), 1996 Avainsanat: sirpa, häkli, hakli, monotypia, esse, olla, monotype, to be |