Dallas Dhu :

They used ex-bourbon and sherry casks.
The distillery had 1 wash still and 1 spirit still.

From the Whisky pilot by Uniqum Systems :
Originally to be called Dallasmore in 1898, the plans for the new distillery, designed by local Elgin architect Charles Doig, caused much correspondence in the local paper, the Forres Gazette. This included some verses from a local councillor. The fillings were eventually advertised as Dallas Dhu in November 1899, when it came on stream. One of several distilleries on the estate of the local laird, Alexander Edward, who in 1900 sold the distillery to the proprietors of Roderick Dhu, a whisky brand popular at the turn of the last century.
The stillhouse was burned down on 9 April, 1939 and it did not re- open until 1947. It closed in 1983 and the licence was cancelled in 1992. The distillery buildings were handed over by Scottish Malt Distillers to the Historic Buildings and Monuments department of the Scottish Office who now run them as a model example of a distillery on the tourist trail.
It is still possible to obtain special bottlings from old casks, although supplies of the whisky are now dwindling all the time. Dallas Dhu is a perfectly preserved example of what a small Highland distillery would have been like at the turn of the century. Had its water supply been more plentiful, it is most likely that the distillery would have been one of the ones chosen for expansion in recent years.
As it is, its single pair of old stills has been preserved, as have all the old plant and machinery and the fine old distillery buildings.
Built in a hollow to the east of an unclassified road which forks south of the A940 on the southern outskirts of Forres.
Water from the Altyre Burn (known locally as the Scourie Burn).

-
Source www.bbr.com :

Dallas Dhu Distillery, Speyside

The original meaning of the name Dallas Dhu (pronounced "Dai leas dubh") means "Field by the Black Water fall" or "Black Water Valley". In it's time the output from the warehouses contributed to the blends of Roderick Dhu and Benmore.

The construction of the distillery was commissioned by blender Wright & Greig, in 1898, with designs by the architect Charles Doig, who is considered by many as the inventor of the pagoda-roof concept.The distillery was extended in the 1950's and 1960's. Electricity did not reach Dallas Dhu until the 1950's and the water wheel still contributed to the power pool into the 1970's.

Dallas Dhu was closed by the Distillers Company Limited in 1983. Dallas Dhu has been operated as a non working distillery museum since 1988. The single malt used to enter in the composition of the blend called "Roderick Dhu". There are no plans to restart production, but rare batches appear in independent bottlings. The style of the malt is soft, with sweet overtones of honey, candied organges and bitter chocolate. It makes a great after dinner dram.