After Pertz had given up research, at Blackman's suggestion she worked on indexing German literature on plant physiology, including the journals Biochemische Zeitschrift and Zeitschrift für Physiologische Chemie.
Despois de que Pertz renunciara á investigación, a suxestión de Blackman, traballou na indexación da literatura alemá sobre fisioloxía vexetal, incluído as revistas Biochemische Zeitschrift für Physiologische Chemie.