A design for a 'circular movable bookcase' under the patent of the Catherine-Street makers Morgan and Sanders was published in Rudolph Ackermann's The Repository of Arts in 1810 (reproduced in P. Agius, ed., Ackermann's Regency Furniture and Interiors, Wiltshire, 1984, p.48, pl.13). According to Ackermann, this 'ingenious and elegant contrivance', derived from the form of dumbwaiters, affords some 'valuable conveniences'.
Another example with tripod base is illustrated in F.L. Hinckley, The More Significant Regency Furniture 1800-1830, New York, 1991, p.32, fig.33. Another of this form was sold anonymously, Christie's London, 7 July 1988, lot 91 (£23,100).