Nature of source: a dissident-science society wiki. Bibliographic and abstract entries. The biography is the wiki's own account and gives no sources on the page.
Priorities 1-4.
Biography [web: Wilbur_Silvertooth page]
Ernest Wilbur "Bud" Silvertooth, born 27 Nov 1916, Portland OR. Died 24 Sep 2000, Bellingham WA, in a nursing home. Residence Orcas, WA.
B.S. Physics, Caltech (1930s); graduate optics work at Caltech not completed; joined Paramount Studios.
Said to have been in Lewis Terman's gifted-children study. "Is said to have met Albert Einstein at the age of 14" and asked him about relativity, with Einstein "reportedly" allowing he might be right. The wiki marks this as an anecdote.
1941 Academy Scientific or Technical Award (see the atogt note).
"Later recruited into an Air Force 'think tank' associated with the Aerospace Corporation. His work there was classified." No source given.
Says his experiments "have not been independently reproduced". That is the wiki's statement; it does not mention Marett (2012) or Marinov (1987).
Article list includes "Special Relativity", Nature 322 (6080) 590 (1986), and "Position Error in Satellite Navigation Systems" (1990).
Papers by Silvertooth [web: individual pages]
"Position Error in Satellite Navigation Systems", Galilean Electrodynamics 1(6) 80-83 (1990). Abstract: the position error when the Sagnac effect contribution is ignored, with "a numerical example". This is the GPS claim of 1986 claim 5, worked out.
"A New Michelson-Morley Experiment", C. K. Whitney & W. Silvertooth, Physics Essays 5(1) 82-89 (1992). Abstract: a standing-wave check inside one Michelson arm. "Our experiment shows a departure from this expected nodal spacing", consistent with c(θ) = c/[1+(v0/c)cos θ], v0 about 378 km/s, θ = 0 fixed relative to the stars.
"Motion Through the Ether" (1989, read in full on the wiki per the listing; see the spirit-science note).
Supporting or related work by others [web: individual pages]
Paul Wesley, "Silvertooth's Standing-Wave Measurement of Absolute Velocity of Solar System" (1987, pp. 11-15; journal field not shown, probably SST). Abstract: v = 378 ± 8 km/s, right ascension α = 11 ± 2 h. "in reasonable agreement" with the 2.7 K anisotropy and Marinov's coupled-mirrors and toothed-wheels experiments. (Some characters are garbled on the page.) This gives an error bar the 1986 paper lacks. Whose analysis and data it rests on is unknown; check the original.
Stefan Marinov (with P. Wesley listed), "A Simplified Repetition of Silvertooth's Measurement of the Absolute Velocity of the Solar System" (1987, pp. 16-31). Abstract (Marinov): done in January 1987 in a "substantially different arrangement". v = 386 ± 38 km/s, declination −22 ± 6 degrees, RA 12.5 ± 0.5 h. Agrees with Silvertooth, his rotating-axle, coupled-mirrors and toothed-wheel experiments, and the CMB.
Stefan Marinov, "Repetition of Silvertooth's Experiment for Measuring the Aether Drift", SST (no abstract on file).
Harold Aspden, "A Note on the Silvertooth Experiment", SST 1987, pp. 9-12 (no abstract).
C. K. Whitney & S. Marinov, "Discussion ... on Silvertooth's Experiment", Deutsche Physik 2(8) (1993).
"A Preliminary Analysis of the Silvertooth Experiment", Physics Essays 1(4) 272-274 (1988). The author field is blank on the wiki; the 1989 EWW reading list gives B. A. Nanning, Physics Essays 1(4) 1988.
J. S. Wilczynski, "A New Explanation of the Michelson-Morley, Marinov and Silvertooth-Jacobs Experiments" (1991).
"Some Cosmological Implications of the Silvertooth Experiment" and "Getting Wind of the Ether" (no details read).
Critical analyses [web]
Chalmers W. Sherwin, "An Analysis of the Silvertooth Experiment", Physics Essays 2(2) 125- (1989). Abstract: confirms "Phipps's conclusion" (Thomas E. Phipps Jr.; identification [memory, medium]) that a fringe output cannot go negative. Silvertooth's AC coupling between photodetector and oscilloscope would make nodes look like "inverse phase". "His observed effects ... could be caused by a very small misalignment (of the order of λ/4) in a total traverse ... of approximately 500 [λ]."
Bearing
Claim 4: one claimed replication (Marinov 1987, different arrangement) and one re-analysis with an error bar (Wesley 1987) in the dissident literature. Specific instrumental objections from Sherwin and Phipps (AC coupling, λ/4 twist). Marett (2012) is in a separate note.
Claim 5: the GPS paper (1990) exists. The quasar derivation is in the 1976 Applied Optics paper (i-logic note).