Tektronix dominated the oscilloscope market over several decades. There are multiple other sites with information about Tektronix instruments. Here, I merely want to list the units, which are part of the collection. Green text indicates that more information about the particular instrument will be added. The black text indicates a link to further information and pictures.
The vintage is based on period of manufacture and serial number and could be off.
For detailed information about any of the featured instruments I recommend visiting TekWiki.

Benchtop / cart oscilloscopes (vs rack mounted)...
Picture
TEKTRONIX
310, S#6850
Vintage 1956
Origin USA
Picture
TEKTRONIX
310A, S#02402
Vintage 1960
Origin USA
 Picture
TEKTRONIX
310A, S#19245
Vintage 1965
Origin USA
Picture
TEKTRONIX
315D, S#1682
Vintage 1956
Origin USA
 Picture
TEKTRONIX
316, S#484
Vintage 1960
Origin USA
Picture
TEKTRONIX
317, S#184
Vintage 1962
Origin USA
 Picture
TEKTRONIX
360, S#309
Vintage 1956
Origin USA
Picture
TEKTRONIX
511A, S#961
Vintage 1951
Origin USA
 Picture
TEKTRONIX
511A, S#13981
Vintage 1952
Origin USA
Picture
TEKTRONIX
512, S#611
Vintage 1951
Origin USA
 Picture
TEKTRONIX
513D, S#1355
Vintage 1952
Origin USA
Picture
TEKTRONIX
514D, S#1726
Vintage 1954
Origin USA
 Picture
TEKTRONIX
516, S#???
Vintage 1962
Origin USA
Picture
TEKTRONIX
517, S#176
Vintage 1952
Origin USA
 Picture
TEKTRONIX
517A, S#1303
Vintage 1955
Origin USA
Picture
TEKTRONIX
519, S#000442
Vintage 1963
Origin USA
 Picture
TEKTRONIX
524D, S#5451
Vintage 1956
Origin USA
Picture
TEKTRONIX
531A, S#020238
Vintage 1962
Origin USA
 Picture
TEKTRONIX
531A, S#025649
Vintage 1962
Origin USA
Picture
TEKTRONIX
532, S#588
Vintage 1958
Origin USA
Picture
TEKTRONIX
535, S#1115
Vintage 1958
Origin USA
 Picture
TEKTRONIX
536, S#138
Vintage 1959
Origin USA
Picture
TEKTRONIX
545A, S#037587
Vintage 1968
Origin USA
 Picture
TEKTRONIX
546, S#002752
Vintage 1966
Origin USA
Picture
TEKTRONIX
547, S#001066
Vintage 1966
Origin USA
 Picture
TEKTRONIX
549, S#002550
Vintage 1968
Origin USA
Picture
TEKTRONIX
551, S#5527
Vintage 1964
Origin USA
Picture
TEKTRONIX
555, S#002949
Vintage 1963
Origin USA
 Picture
TEKTRONIX
555, S#011176
Vintage 1968
Origin USA
Picture
TEKTRONIX
564, S#004172
Vintage 1965
Origin USA
 Picture
TEKTRONIX
565 S#003403
Vintage 1965
Origin USA
Picture
TEKTRONIX
575, S#1733
Vintage 1957
Origin USA
Picture
TEKTRONIX
585 S#000856
Vintage 1963
Origin USA
 Picture
TEKTRONIX
661 S#000309
Vintage 1963
Origin USA
Picture
TEKTRONIX
945 S#302
Vintage 1963
Origin USA
Rack mounted oscilloscopes...
Picture
TEKTRONIX
RM15 S#000864
Vintage 1960
Origin USA
 Picture
TEKTRONIX
RM31A S#027024
Vintage 1964
Origin USA
Picture
TEKTRONIX
RM502A S#024290
Vintage 1966
Origin USA
 Picture
TEKTRONIX
R556 S#003282
Vintage 1970
Origin USA
Picture
TEKTRONIX
RM504 S#000220
Vintage 1964
Origin USA
 Picture
TEKTRONIX
RM504 S#000808
Vintage 1966
Origin USA
Oscilloscope related equipment...
Picture
TEKTRONIX
123 S#01594
AC Coupled PreAmplifier
Vintage 1958
Origin USA
 Picture
TEKTRONIX
127 S#111
PreAmplifier Power Supply
Vintage 1960
Origin USA
Picture
TEKTRONIX
175 S#000647
High Current Adapter for 575
Vintage 1965
Origin USA
Picture
TEKTRONIX
180A S#5037
Time Mark Generator
Vintage 1962
Origin USA
 Picture
TEKTRONIX
RM181 S#1160
Time Mark Generator
Vintage 1962
Origin USA