No.	Title	Date
21	Building the railroad	1910
22	Building the railroad	1910
23	Building the railroad	1910
24	Building wing walls on the railroad	1910
25	Concrete mixer	1910
26	Concreting Lower Form S-Abut	1910
27	Construction crew using a jackhammer to repair a sidewalk in North Miami	1955-11-12
28	Construction diver working	1910
29	Construction materials for Boynton Inlet, 1925	1925
30	Construction materials for Boynton Inlet, 1925	1925
31	Construction materials for Boynton Inlet, 1925	1925
32	Construction materials for Boynton Inlet, April 1925	1925-04
33	Construction of the Boynton Inlet bridge, 1925	1925-09-15
34	Construction of the bridge over the Boynton Inlet, 1925	1925
35	Construction workers installing sewer pipe along Dixie Highway in North Miami	1953-12-03
36	Crane on north jetty constructing Boynton Inlet, 9 September 1925	1925-09-09
37	Crane on truck during building of Boynton Inlet, 1925	1925-09
38	D.B. Roberts with engineering crew on Key Largo	1906
39	Divers working	1910
40	F.A. Barrett paying African-American railroad workers	1910