Earlier sources attribute the shared Booker livery to Booker Brothers, McConnell, and Ships & The Sea also gives its funnel to Arakaka. The National Maritime Museum flag is dated about 1955. A Mitchell note tentatively dates adoption to 1961, despite the earlier sources; the inconsistency is preserved.
The history describes a 1960s change from buff with a black top to blue with a white band and red “B”, numbered B50 in the document. Rosanoski concludes that B52 apparently did not exist, although it remains among the accepted images and its sources are retained.
The document also cites the history Booker Line 1835–1978 as support for the separately referenced B1069 flag.
The Liverpool–Georgetown service was called Liverpool Line from 1867, becoming Booker Line in 1911. Other notes trace a Booker Brothers business to about 1837 and give 1897 as a possible name stage. Reorganisation in 1950 made Booker Brothers (Liverpool) the parent of Booker Line and the Demerara and trading subsidiaries. Shipowning withdrawal was announced in November 1982, excluding Booker Shipping (Demerara).
Related companies included S. William Coe, Coe Metcalf, Booker Ship Finance and the Demerara and Trinidad shipping concerns. Coe Metcalf was sold to James Fisher in August 1984. Booker Merchantmen is described as formed in 1961 for sugar importing, while the broader history calls it a 1960s company-name change.
U.K., Liverpool; Georgetown, British Guiana.
Keep the explicit scope label independent; no alias or company identity is inferred.