No it is not.
An interesting story of five knives (Booth also had a folder on him when killed).
Obviously in an era before crime scenes, chain of evidence, and CSI... things were pretty loose. And the several knives connected to the Lincoln assassination were loosely referred to as 'bowie' knives only.
Plus, over time, the collection of Booth "artifacts" have been identified differently and displayed in a number of ways. In "older" reference books, the Park Service's claim that this is Booth's knife is often found:
Here is George Atzerodt's Rio Grand knife, that he lost his nerve to kill Vice President Andrew Johnson with:
It was found by detective John Lee upon his search of Atzerodt’s room at the Kirkwood house: he stated, “I then went to the bed, took up the covering piece by piece, and felt all through it to see if there was any thing in the quilt. After I got down underneath the sheets, between the sheets and the mattress, I got the bowie-knife.”
Atzerodt had a second knife, now called the "Gutter Knife." It was found in street gutter where he had panicked (not too bright hiding the other knife in his bed) It was found the next morning in the gutter of F street between 8th and 9th streets. Originally spotted by a lady living in a third story room across the street, she sent out a Black woman servant to get it, but did not want it in the house. A Mr. William Clendenin, who was walking down F street at the time and saw the woman retrieve it, took possession of it and then turned it over to the chief of police.
It is easy to keep track of Atzerodt's "Bed Knife" in this mess, as it has a damaged blade edge.
At John Surratt’s Trial in 1867, was the first description of Booth’s knife from Everton Conger:
“Q: Will you state what articles you took from him?
A: This is the carbine he had. He had two pistols; I think they were Wheeler & Wilson’s; two revolvers, my impression is they were seven-shooting pistols, of some kind, of about six inch barrel. He had a large bowie-knife, or hunting knife, and a sheath.
Q: Do you know whose make that was?
A: No, sir; the knife has a name on it, but I do not know what it is.”
“(A bowie-knife and sheath and a compass were shown to witness, and identified by him as being taken from the body of Booth. A piece of map was also identified by witness as having been taken from Herold…”
“Q: How do you identify the knife?
A: The knife has a spot of rust on it, about two-thirds the way from the hilt to the point, right where the bevel of the knife commences at the end. It was said to be blood, but I have never thought it was myself. It is the same shape and style of knife.
Q: Have you not seen other knives like it?
A: Yes, sir.
Q: Have you not seen a great many like it?
A: No, sir; only a few.
Q: You put no marks on it?
A: No. I have no means of identifying it except by the description I have given.
Q: You did not look at the name of the maker?
A: I do not know that the name of the maker is on it. I have looked at it since and noticed the words “Rio Grande camp-knife” on it. I have no means of identifying it except what I have stated, and my general recollection of the style of the knife”
The “spot of rust” and the words “Rio Grande Camp Knife” are both on this blade:
Conger says that one way he identifies it is the spot of rust akin to blood on the blade. This mark is supported by a May 17th, 1865 statement by Boston Corbett who says, “Upon his being brought out, we found a seven shooter Spencer carbine. I saw only one revolver; but there was a second one in the hands of Col. Baker, and also a large knife or dagger which I supposed to be the one displayed on the night of the 14th inst. at the theatre, having upon it marks of blood.”
Part 2 to follow focusing on Booth's knives.