Ball, Wilfrid (Illus.) Hampshire; described by
Telford Varley. pp. xii., 316, 75 col. illus.,
map. 1909
Varley, Telford. Hampshire described; [illus.]
by W. Ball. 1909
Hampshire:
Ball, W., &c. Hampshire painted and described.
1909

For short-entry catalogues, or as an economy, the "added entry" for the second of the persons named may be reduced to the reference, as

Varley, Telford. See Ball, Wilfrid.

Where the artist's name appears in the secondary place, as in the second book, a reference like this meets all reasonable requirements, though the same cannot be said when the writer of the text occupies that place, as in the first instance, and an entry is preferable to the reference if the trifling additional space can be afforded. In reality it does not resolve itself into a question of sparing space for the entry of a particular book, but of finding room for many similar cases.

The second book is

Shore, W. Teignmouth. Kent; [illus.] by W.
Biscombe Gardner. pp. x., 240, 73 col.
illus., map. 1907
Gardner, W. Biscombe (Illus.) Kent; [described]
by W. T. Shore. 1907

or alternatively

Gardner, W. Biscombe (Illus.) See Shore, W.
Teignmouth.
Kent:
Shore, W. T., &c. Kent. 1907

The abbreviation "illus." is used equally to mean illustrator, illustrated, and, in the collation, illustrations, without any likelihood of confusion of idea by a person of ordinary intelligence, the position and context denoting the meaning. Sometimes this abbreviation is curtailed to "il.", or "ill.", with a loss of clearness, and as no real saving of space results, it cannot be recommended.