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Letters from William Crookes to his laboratory assistant, Charles Henry Gimingham

A Practical Handbook of Dyeing and Calico-Printing

Laboratory Notebooks of William Crookes

Material relating to John Spiller

Letter from William Crookes to Mr Ionides

Spectrum analysis photograph entitled: 'Method of standardising reference lines by comparison with iron lines'

Laboratory Weighing Book of William Crookes

Spectrum analysis photgraph: spectrum of iron and radium compared

Papers of Sir William Crookes re spectral photography