Doubleday was Wilbur's American publisher longer than any other publisher. Doubleday was very inconsistent with declaring publication year on title-pages, and edition and printing details on copyright pages.
After nearly 25 of collecting Wilbur Smith books, I have never seen a copy of THE ANGELS WEEP, THE DELTA DECISION, or THE LEOPARD HUNTS IN DARKNESS that specifically state on their copyright pages "First Edition in the United States of America." Doubleday usually includes language that declares whether or not a book is a first edition.
GOLD MINE and THE DIAMOND HUNTERS have the publication year declared on their title-pages and state on their copyright pages the year of copyright as well as "First Edition in the United States."
THE SUNBIRD through A SPARROW FALLS have the publication year declared on their title-pages and state on their copyright pages the year of copyright as well as "First Edition in the United States of America."
Then came the inconsistencies.
HUNGRY AS THE SEA has no publication year declared on its title-page, but does state on its copyright page the copyright year of 1978, as well as "First Edition in the United States of America." However, the Uncorrected Proof DOES HAVE the publication year, 1978, declared on its title-page, and also states on its copyright page "First Edition in the United States of America."
THE DELTA DECISION has the publication year, 1981, on its title-page. As mentioned above, this is one of the Doubleday publications that I have never found in hardback with any "first edition" declaration on the copyright page. Furthermore, I own three copies and all of the books are identical (having gone through a thorough scrutiny). But, their dust jackets are all different. One has the price printed on the upper corner of the inside DJ flap. Another has the same price printed on the lower corner of the inside DJ flap. The third copy has no price printed, but is not price-clipped either. Very inconsistent, to say the least, especially since the books on which these three DJs live are the same in every way that I can ascertain. They all have 1981, the publication year, declared on their title-pages and the copyright year, 1979, stated on their copyright pages. The Uncorrected Proof is the same as the three hardback copies that I own.
FLIGHT OF THE FALCON has the publication year, 1982, on its title-page and specifically states on its copyright page the copyright year of 1980, as well as "First Edition in the United States of America." I do not own an Uncorrected Proof. The book-club edition does not have the publication year on its title-page and does not mention "first edition" on its copyright page.
MEN OF MEN reflects another inconsistency. It has the publication year, 1983, on its title-page, but specifically states on its copyright page "First Edition" without the additional words "in the United States of America." The copyright page also states the copyright year of 1981. I do not own an Uncorrected Proof. The book-club edition does not have the publication year on its title-page and does not mention "first edition" on its copyright page.
As mentioned above, THE ANGELS WEEP reflects yet another inconsistency. It has the publication year, 1983, on its title-page, and the copyright page declares the copyright date of 1982. But the copyright page does not specifically state "First Edition" or "First Edition in the United States of America." I own an Uncorrected Proof copy and it has the publication year, 1983, on its title-page, and the copyright page declares the copyright year of 1982. However, its copyright page DOES declare "First Edition." The book-club edition does not have the publication year on its title-page and does not mention "first edition."
And, again, as mentioned above, THE LEOPARD HUNTS IN DARKNESS has the publication year, 1984, on its title-page, and the copyright page declares the copyright year of 1984. The copyright page does not specifically state "First Edition" or "First Edition in the United States of America." I own an Uncorrected Proof copy and it has the publication year, 1984, on its title-page, but does not even have a copyright page.
THE BURNING SHORE was the last to be published by Doubleday, and they had to be inconsistent again to go out with a bang. It has the publication year, 1985, on its title-page and copyright page. It further states on its copyright page "First Printing in the United States of America" [note the language change from "Edition" to "Printing"]. The Uncorrected Proof has the publication year, 1985, on its title-page and copyright page, but the copyright page DOES NOT include any declaration about being a "first edition."
Based on all of the information above, I believe I own copies of the first American hardcover editions of THE ANGELS WEEP, THE DELTA DECISION, and THE LEOPARD HUNTS IN DARKNESS.
The first signature is only to be found in a few copies of WHEN THE LION FEEDS. The sloppiest signature was only used for a short period of time, and then he went back to using the penultimate signature-style depicted in the photo below