Series 1. Early Surveys and Property Line Arguments, Los Angeles Harbor; Tidal Phenomena; Los Angeles-Long Beach Breakwaters; Political Problems 1880-1941
Random notes on lands and tides undated
Norway, W. H. Field notes of the Mormon Island lines of Township 5 South, Range 13 West, San Bernardino Meridian, California 1880
Extracts from legal proceedings: City of Los Angeles vs. Borax Consolidated, Ltd., January 14, 1935; The People vs. Banning Company, undated; DeGuyer vs. William Banning, 1881?
Traverse on Mormon Island October 31, 1899
Correspondence and extracts of correspondence re Mormon Island 1908-1937
Retrospection re Mormon Island April 10, 1929
Memorandum on resurvey of Mormon Island July 4. 1916
Note on ordinary high water mark October 14, 1935
"Now what did Hughes testify or write or say about datum and high water?" 1930-1936?
Handwritten notes re Mormon Island, Wilmington Harbor tides 1936
The City of Los Angeles, respondent, v. San Pedro, Los Angeles Salt Lake Railroad Co., appellant April 8, 1920
History of the inner Bay of San Pedro, California, bearing upon the ownership thereof, together with the author's views on the right of retaining it entire for general federal and public uses 1908
On navigability of San Pedro Inner Harbor 1908 June 11
Letters, 1908 August 6 and August 11, to Joseph H. Call, Los Angeles, Calif. re Inner Bay of San Pedro and boundary of Rancho Dan Pedro 1908
Memorandum re harbor line surveys and titles to shorelines and islands of San Pedro Bay November 30, 1915
United States Harbor Lines for Inner and Outer Harbors, San Pedro, Calif July 29, 1908
Memorandum of survey for Los Angeles Harbor fortifications July 4, 1917
Letter, 1921 September 18, to John Doe, et. al., Long Beach, Calif. Re "ordinary high tide" as limit of navigable water and claims of Long Beach to former tide and submerged lands in the San Pedro and Los Cerritos grants 1921
Random remarks advising against early breakwater extension January 14, 1923
Comment re San Pedro Chamber of Commerce report on extension of breakwater September 27, 1923
Notes as to location and width of channel in front of San Pedro July 2, 1924
About the "vara." 1925
Timorous commentary from first impressions on reading proposed bill for unification of harbor control February 15, 1925
Memoranda sic on conditions attached to breakwater construction March 21, 1925
Memorandum on Reservation Point re channel widening, dredging, Deadman's Island September 21, 1925
Letter, 1925 October 4, to "Any who may care to read" re "east basin" Los Angeles Harbor 1925
Memo, U.S. Public Land Survey of Deadman's Island "along ordinary high water mark" by Thompson in 1868 November 16, 1925
S.W. Corner sec. 19 re mistake by Stevenson in survey of San Pedro area in 1885 December 21, 1925
Letter, 1926 April 4, to Mr. Hale re Lecouvereur's survey of 1870 1926
Views on breakwater conditions March 27, 1927
Views of breakwater conditions March 17, 1928
Union Pacific Railroad appendices nos. 1 to 6 inc. by D.E. Hughes, Civil Engineer re San Pedro Bay, Los Angeles Harbor; physical history, history of ownership, surveys, high water marks, bench marks February 1936
Notes on high water mark January 5, 1936
Letter, 1937 June 24, to Easton re legal aspects 1937
Letter, 1937 November 16, to A. L. Sonderegger, Los Angeles, Calif. re East Jetty, Deadman's Island 1937
Recollections, pertaining to the southerly portion of Los Cerritos Rancho, derived from observations, readings and hear-says; and of contemplation for Nature's work in the vicinity; and interference by works of man; also a Surveyor's thoughts of acquired status of land titles November 29, 1937
ABC's re tides inside and outside harbors December 9, 1937
Letter, 1937 December 25, to Major Theodore Wyman Jr., Los Angeles, Calif. re harbor lines desired by Long Beach 1937
Additional coordinates, etc. for harborline map Long Beach inner harbor undated
Letter, 1938 January 25, to U. S. Engineer Office, Los Angeles, Calf. re Long Beach harbor mouth 1938
Reproduced picture and rehashed remarks re Los Angeles River and San Gabriel River mouths February 27, 1938
Channel and harbor lines between LaGoleta and Timms Point in San Pedro May 6, 1938
Last squawk re height of ordinary high water in the state of nature near Long Beach pre-1896 June 30, 1938
Memorandum re partition lines between Los Cerritos and San Pedro Ranchos September 20, 1938
Was the San Gabriel River and any of its branches navigable in the state of nature? November 22, 1938
Los Cerritos Rancho meander lines along its southerly boundary March 1, 1939
Ocean shore of Terminal Island between city limits and entrance to Long Beach inner harbor August 25, 1939
Sonderegger, S. L. Shore line of easterly portion of Terminal Island and mouth of old San Gabriel River map December 1905
Notes re the Bates (?) report on early surveys September 1 and 9, 1939
Partition between San Pedro and Nieto grants as seen by the man in the moon September 9, 1939
Los Cerritos B San Pedro patent common boundary October 4, 1939
Miscellaneous: patents, correspondence, maps, notes, re early surveys and property line problems; Los Angeles Harbor, San Pedro breakwater controversy 1887-1938
Terminal Island, Calif April 1941
Series 2. Diversion of Los Angeles River from Los Angeles-Long Beach Harbors 1914-1938
Memoranda 1914-1920
Discussion and estimates on river diversion along different routes and different grades, based on topographic map and recent profiles, furnished by Mr. Reagan, County Engineer 1916
Reminiscences on breaking ground for harbor protection work October 27, 1919
Correspondence, re flood control and Los Angeles River 1917-1938
Miscellaneous notes, maps, re silt diversion 1919
Series 3. Santa Monica Breakwater 1933-1934
Letter report addressed to Board of Commissions of the City of Santa Monica re breakwater under contract for construction. Recommends change in contract, substitution of random stone April 13, 1933
Correspondence re Santa Monica breakwater 1933-1934
Series 4. Point Fermin Landslide 1929
Arnold, Ralph, Malcolm H. Bissell, and William J. Miller Report on the Point Fermin landslide, San Pedro, California August 28, 1929
Correspondence re the landslide July-October 1929
Series 5. Los Angeles County Sewer Outfall 1925-1934
Correspondence re Los Angeles County "Whites Point Sewer Outfall" controversy 1925-1934
Series 6. Newport Bay, California 1924-1925
Memorandum re proposed improvement of entrance to Newport Bay February 3, 1924
Beach, Lansing H. Newport Bay, Calif. preliminary report March 14, 1925
Beach, Lansing H. Orange County Harbor Commission report to the Board of Supervisors April 14, 1925
Series 7. San Diego and Vicinity 1905-1939
Memorandum on proposed revisions of San Diego Harbor lines September 15, 1911
Memorandum on reservation for dike in Pueblo lot 219 July 6, 1926
Pertaining to False Bay re San Diego River delta in False Bay, course of the river and title to tidelands, in litigation as State vs. City of San Diego July 28, 1939-August 20, 1939
Correspondence and letter reports re Coronado sea wall; San Diego Harbor; proposed LaJolla breakwater 1905-1935
Series 8. Miscellaneous 1856-1942
Correspondence re concrete in seawater 1903-1932
Correspondence; notes; reprint of Hughes' article "The Sickle, or perfect railway curve," from Transactions of the Technical Society of the Pacific Coast, vol. IX, no. 3, April 1892, p. 63-81.; notes re lemniscate and cubic parabola 1920-1942
Correspondence and notes re stone specification 1903-1917
Correspondence, memos, and sketches re breakwater design 1908-1938
Correspondence re surge 1922
Correspondence and memo re rangefinder 1903-1917
Miscellaneous correspondence re papers by colleagues; proposal for a submarine detector; engine vibration in dredge "Seattle"; mathematical puzzles 1916-1942
Unidentified coordinates
Miscellaneous materials pertaining to Rancho Los Cerritos 1856-1890
Miscellaneous materials pertaining to Rancho Los Palos Verdes 1856