Rhialto the Marvelous (1984) - fourth in the "Dying Earth" series. The first edition was a 1000 copy signed, slipcased hardcover from Brandywine Press (an imprint of Underwood-Miller.) The trade-hardcover came out from Baen in November 1984 - who did a paperback reprint a year later.

(Foreword by Jack Vance)
The Murthe
Fader's Waft
Morreion

The first 2 novelets are original ("Fader's Waft" can be counted as a short novel - 120 pages long.) "Morreion" appeared in Flashing Swords #1 (1973) - and also as a (slim) limited hardcover from Underwood-Miller in 1979 (1200 copies.)