There are 2 titles associated with this firm.

Hemans, Felicia. Scenes and Hymns of Life. With Other Religious Poems. By Felicia Hemans. Edinburgh: William Blackwood [Princes Street], Thomas Cadell Jun., 1834.
Johnstone, Christian I. True Tales of the Irish Peasantry as Related by Themselves; Selected by Mrs. Johnstone from the Report of the Poor-Law Commissioners. Edinburgh: William Tait, Simpkin, Marshall and Co., James Ridgeway, John Cumming, 1836.