Found -- this pamphlet from the 1930s put out by Eleanour Sinclair Rohde (1881 -1950.) As Wikipedia notes, she had a fairly standard house but an enormous garden where it appears she sold plants (mostly aromatic -with ESR it was all about scent) by mail order and possibly to visitors. She was the author of several now sought after works on gardening, especially The Scented Garden (1937) and A Garden of Herbs (1920). In World War 2 she published a useful work that was reprinted several times The War-Time Vegetable Garden (1941).

The finely shredded leaves of all plants marked * are a wholesome addition to salads and turn a dull salad into an interesting one.
(Tanacetum balsamitum).
Aromatic flavour. Used since Saxon times for flavouring ale, etc. 4-ft. Plants 6d. each.
(Angelica archangelica).
Leaves have same flavour as stalks. Recipe for candying stalks sent with plants.
Plants 6d. Seedlings 2d. each.
*LADS LOVE OR OLD MAN.
(A. abrotanum).
Plants 6d. each.
For centuries a favourite in cottage gardens. Aromatic yet sweet scent.